{"title":"Filters","description":"\u003cp\u003eBrowse our Filters collection. Best Price.\u003c\/p\u003e","products":[{"product_id":"shelyak-slit-set-for-lisa-lhires-iii-se0122","title":"Shelyak Slit set for LISA \u0026 LHIRES III (SE0122)","description":"\u003ch2\u003eShelyak Slit set for LISA \u0026amp; LHIRES III  \u003c\/h2\u003e\n\u003cp\u003eSet (19\/50\/75\/100 \u003cspan data-mce-fragment=\"1\"\u003eµ\u003c\/span\u003em) of wide slits for\u003cspan\u003e \u003c\/span\u003eLISA\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003eLhires III\u003cspan\u003e \u003c\/span\u003espectroscopes.\u003c\/p\u003e\n\u003cp\u003eTo be combined with slit holder for\u003cspan\u003e LISA \u003c\/span\u003eor\u003cspan\u003e LHIRES III\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eA 19µm hole to help adjusting your spectrograph to the best and three slits with 50, 75 and 100µm width.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eChoice is made by rotating the squared slit holder.\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eShelyak Slit set (19\/50\/75\/100 \u003cspan data-mce-fragment=\"1\"\u003eµm\u003c\/span\u003e) for LISA \u0026amp; LHIRES III\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eShelyak 1-Year Warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Shelyak","offers":[{"title":"Default Title","offer_id":52384142196956,"sku":"agp1787937447901","price":168.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/shelyak-slit-set-for-lisa-lhires-iii-se0122_1.png?v=1787937459"},{"product_id":"shelyak-ring-m42-male-to-eos-female-ba0023","title":"Shelyak Ring M42 Male to EOS Female (BA0023)","description":"\u003ch2\u003eShelyak Ring M42 Male to EOS Female\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eIncluded in \u003c\/span\u003eeShel spectroscope\u003cspan\u003e delivery. \u003c\/span\u003eTo connect acquisition CCD camera\u003cspan\u003e in M42 with eShel \u003c\/span\u003espectroscope.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv class=\"et_pb_module et_pb_tabs et_pb_tabs_0 et_pb_tabs_vertically_stacked et_slide_transition_to_1\"\u003e\n\u003cdiv class=\"et_pb_all_tabs\"\u003e\n\u003cdiv class=\"et_pb_tab et_pb_tab_1 clearfix et-pb-active-slide\"\u003e\n\u003cdiv class=\"et_pb_tab_content\"\u003e\n\u003cp data-placeholder=\"Traduction\" dir=\"ltr\" class=\"tw-data-text tw-text-large tw-ta\" id=\"tw-target-text\"\u003e\u003cspan lang=\"en\" tabindex=\"0\"\u003eThickness of the ring: 9mm\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-placeholder=\"Traduction\" dir=\"ltr\" class=\"tw-data-text tw-text-large tw-ta\"\u003e\u003cspan lang=\"en\" tabindex=\"0\"\u003eIn the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan lang=\"en\" tabindex=\"0\"\u003eShelyak Ring M42 Male to EOS Female\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en\" tabindex=\"0\"\u003eMale side : \u003cspan data-mce-fragment=\"1\"\u003eM42 \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en\" tabindex=\"0\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFemale side : EOS\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eShelyak 1-Year Warranty\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Shelyak","offers":[{"title":"Default Title","offer_id":52384142328028,"sku":"ygv1787937449718","price":162.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/shelyak-ring-m42-male-to-eos-female-ba0023_1.png?v=1787937454"},{"product_id":"shelyak-argon-neon-spare-bulbs-se0148","title":"Shelyak Argon-neon Spare Bulbs (SE0148)","description":"\u003ch2\u003e\u003cspan data-mce-fragment=\"1\"\u003eShelyak Argon-neon Spare Bulbs \u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eBag of 3 \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003espare\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e argon-neon bulbs for \u003c\/span\u003eAlpy calibration unit\u003cspan data-mce-fragment=\"1\"\u003e, \u003c\/span\u003eLISA calibration\u003cspan data-mce-fragment=\"1\"\u003e or \u003c\/span\u003eLhires III.\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eShelyak Argon-neon Spare Bulbs \u003cbr\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eShelyak 1-Year Warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Shelyak","offers":[{"title":"Default Title","offer_id":52384142360796,"sku":"vdx1787937450300","price":26.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/shelyak-argon-neon-spare-bulbs-se0148_1.png?v=1787937455"},{"product_id":"shelyak-ccs-adapter-ba0036","title":"Shelyak C\/CS Adapter (BA0036)","description":"\u003ch2\u003e\u003cspan data-mce-fragment=\"1\"\u003eShelyak C\/CS Adapter \u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e5mm extender to use a C-mount lens on a CS-mount camera..\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eOften used with \u003c\/span\u003eM42\/C ring\u003cspan data-mce-fragment=\"1\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan data-mce-fragment=\"1\"\u003eIn the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eShelyak C\/CS Adapter\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eShelyak 1-Year Warranty\u003c\/span\u003e\u003c\/p\u003e","brand":"Shelyak","offers":[{"title":"Default Title","offer_id":52384142393564,"sku":"unr1787937454613","price":33.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/shelyak-ccs-adapter-ba0036_1.png?v=1787937459"},{"product_id":"shelyak-bulb-for-flats-el0116","title":"Shelyak Bulb for Flats (EL0116)","description":"\u003ch2\u003eShelyak Bulb for Flats\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eSpare bulb, alone. \u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eShelyak Bulb for Flats\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003eShelyak 1-Year Warranty\u003c\/p\u003e","brand":"Shelyak","offers":[{"title":"Default Title","offer_id":52384142426332,"sku":"eds1787937457647","price":9.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/shelyak-bulb-for-flats-el0116_1.png?v=1787937463"},{"product_id":"shelyak-m42-eos-ring-ba0043","title":"Shelyak M42 \/ EOS Ring (BA0043)","description":"\u003ch2\u003eShelyak M42 \/ EOS Ring \u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eM42 x 0.75 thread \/ EOS ring.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIt allows to mount a Canon EOS Digital SLR on a \u003c\/span\u003eLISA\u003cspan\u003e or \u003c\/span\u003eLhires III\u003cspan\u003e spectroscope.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eShelyak M42 \/ EOS Ring \u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eManual \u0026amp; 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Warranty\u003c\/h3\u003e\n\u003cp\u003eShelyak 1-Year Warranty\u003c\/p\u003e","brand":"Shelyak","offers":[{"title":"Default Title","offer_id":52384142524636,"sku":"pmk1787937462445","price":37.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/shelyak-m42-to-c-mount-adapter-ba0034_1.png?v=1787937467"},{"product_id":"astronomik-oiii-12nm-maxfr-ccd-filter","title":"Astronomik OIII 12nm MaxFR CCD Filter","description":"\u003ch2\u003eAstronomik OIII 12nm MaxFR CCD Filter\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThere is an ever growing demand for filters suitable for extremly fast optical systems like\u003cspan\u003e \u003c\/span\u003eCelestron´s\u003cspan\u003e \u003c\/span\u003eRASA the Epsilon Astrographs made by Takahashi.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOur novel MaxFR emission line filters are suitable up to very fast focal ratios. The new Astronomik MaxFR series of narrowband-emissionline filters is perfect matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha) and sulfur (SII) you may select your filters either with 12nm or 6nm Bandwidth (FWHM).\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003eOur new MaxFR filters are made in a completely new way, designed to work perfectly with fast optical systems. The built-in well known MFR Coating technique gives you the best out-of-band blocking possible across the entire range of wavelengths from the UV up to IR! Your advantage of our new design is a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eextremly high contrast\u003c\/strong\u003e, minimized stray light,\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003eno halos\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eneedle-sharp stars\u003c\/strong\u003e. The Astronomik MFR narrowband-emissionline filters give you the best quality of data: The best start material to be processed to a awesome final image!\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eFor 12nm MaxFR filters this means a unlimited usability from f\/1.7 to f\/8 and about 85% of the maximum transmission at a f\/1.4 as guaranteed.\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFor 6nm MaxFR filters this means a unlimited usability from f\/2.2 to f\/8 with about 90% of the maximum transmission at a f\/2 as guaranteed performance data.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor maximum contrast the SII filter is carefully designed to block all light coming from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emissionline Filters\u003c\/strong\u003e\u003cbr\u003eIf you have to observe from light polluted sites (like most of us...), imaging with narrowband-emissionline filters is the best way to take great images, as all kind of light pollution can be blocked very effective! Normaly an H-alpha filter should be your first step into this amazing field of astrophotography! With an Narrowband H-alpha filter you will be able to take deep and contrasty images even wih very heavy light pollution or with the full moon high up in the sky!\u003cbr\u003eIf you look at other astrophotos, an H-alpha is the best choice for all nebulas glowing red! An OIII filters expands your imaging possibilities, as you are able to image all greenish\/blueish structures. Planetary nebulas and star forming regions are great targets! The SII filters completes your HSO-set of filters. With these three filters you are able to process your images like the ones from the Hubble space telescope!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emissionline filters:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 12nm Filters can be used on all instruments down to f\/1.4, the 6nm filters down to f\/2.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality substrate:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAstronomik filters are made with stress- and striae free, opticaly polished glass. The filter itself is made of ultra thin layers on this substrate!\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParfocal filters:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAll Astronomik Filters are parfocal! Due to the very small thickness-tolerance the focal plane is not shifted when changing filters!\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAstronomik filters are made of up to 170 layers which are coated on both sides of the substrate. These layers form the filter itself and act as a Anti-Reflection Coating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability\u003c\/strong\u003e: Due to our coating technique all Astronomik filters are highly scratch resistant, not sensitive to moisture and do not degrade when getting older. Every Astronomik filter will deliver it´s full perfomance and meet the specs at the point of shipping even after lot´s of years.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegated Blocking:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAll unwanted light is blocked in the whole spectral range from UV up to the IR! (You will not need an additonal UV \u0026amp; IR-Blocker when imaging with any of our new narrowband-emissionline filters with  coating!)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide range of available sizes\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efrom 1,25\" up to square 50mm x 50mm filters.\u003c\/li\u003e\n\u003cli\u003eDelivered in a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ehigh-quality protection \u0026amp; storage box\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDue to our outstandding coating technique we do offer a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e10 year guarantee\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eon all of our filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYou get the highest quality possible with every single Astronomik filter to be able to take perfect images with your instruments! Especialy the filters against ligh pollution and the narrowband-emissionline filters will expand your imaging possibilities enormous! You are investing your money for an accessory which will work in lot´s of years in the same ways it did when it was brand new. Due to our special coating technique the filters do not degraed when getting older, and due to the new MFR coating you will be able to use the filter on nearly all instruments!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTypicall questions asked by customers looking for Narrowband-Emissionline Filters:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhich is the best full-width-half-maximum for me? 12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe question which full-width-half-maximum (FWHM) is the \"best\", shows up on in eMails on our monitor or when talking to customers at fairs very often. A general \"right\" or \"wrong\" or \"best\" does not make any sense. We would not offer both series if they were not needed.\u003cbr\u003eIf you have a camera with an extremly low dark current and effective cooling, the 6nm filters will give you major advantages: Due to the stronger blocking of the background you will be able to expose longer and get deeper images! All stars are very tiny points, most faint stars do not show up anymore! -This is a major advantage even for normal cameras, as you can take images of faint structures even in star-crowded regions of the milkyway!\u003cbr\u003eTo put it short: 12nm Filters are the right choice for all DSLRs and dark-current limited cameras.\u003cbr\u003e6nm filters are the best choice for observing sites with extrem strong light pollution, cameras with low dark-current and when weak objects require the maximum contrast and star-reduction possible!\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHow much is exposure time increased?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis question is asked quite often, and the answer is very easy: You don have to expose longer, but you MAY expose longer!\u003cbr\u003eDue to the high transmission of approximately 100% at the center wavelength nearly all emission line photons reach the sensor. So the number of for example \"H-alpha-photons\" does not change significant wether a H-alpha filter is installed or not. But looking at the photons of other wavelength, which wi do NOT want to record makes the effect of the filter clear: The combination of a very good blocking of all unwanted light from UV up to the IR and the narrow bandwidth of the filters reduces all unwanted signal on the sensor! If you do an exposure of 30sec without any filters from a lightpolluted urban observing site, your sky-background might be allready very, very bright or even saturated. The same image taken with an Narrowband-Emissionline filter will give you a perfect black background without any signal and the signal from the object will be about the same. With this black background you have the possibility to expose longer -propably 30min instead- to record fainter structures! So itś not a \"must\", it´s a \"can\".\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e_________________________\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003e\u003cspan\u003eAll  Astronomik Filters are perfect for modern cameras, including both CMOS and CCD based cameras, allowing you to capture the very best images possible with your instruments. Sharpness, contrast and the absence of any reflections is guaranteed.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eEach and every Astronomik filter has to pass a complex quality control process before being suitable for delivery to our customers. Each and every emission line filter is measured with a high-end Perkin-Elmer spectral-photometer to make sure that every single filter is up to the specifications published on our website.\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003e\u003cspan\u003e\u003cbr\u003eOn the back of each filter-box you will find a label that details the precise sensitivity and band pass measurements for that individual filter inside the box: You will see the max transmission and the recommended range of focal ratio were the filter will give you the best performance.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003e\u003cspan\u003e_________________________\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cstrong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003ch3 style=\"text-align: left;\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003eSelected frame size Astronomik 12nm MaxFR CCD Filter\u003c\/li\u003e\n\u003cli\u003ePlastic Storage Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"text-align: left;\" class=\"tab__content tab.box tab__content--active\" data-content=\"tab-3\" aria-labelledby=\"tab-title-3\" aria-hidden=\"false\" role=\"tabpanel\"\u003e\n\u003cbr\u003e\u003cspan\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp style=\"text-align: left;\"\u003eAstronomik\u003cspan\u003e \u003c\/span\u003e10 year warranty\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"MaxFR 1.25\" (M28.5)","offer_id":52384142622940,"sku":"ugc1787937467885","price":126.96,"currency_code":"USD","in_stock":true},{"title":"MaxFR 2\" (M48)","offer_id":52384142655708,"sku":"pyx1787937467886","price":286.46,"currency_code":"USD","in_stock":true},{"title":"MaxFR Clip-Filter EOS APS-C","offer_id":52384142688476,"sku":"qff1787937467887","price":164.14,"currency_code":"USD","in_stock":true},{"title":"MaxFR Clip-Filter EOS XL","offer_id":52384142721244,"sku":"evh1787937467888","price":316.53,"currency_code":"USD","in_stock":true},{"title":"MaxFR Clip-Filter EOS R XL","offer_id":52384142754012,"sku":"qmf1787937467889","price":287.01,"currency_code":"USD","in_stock":true},{"title":"MaxFR Clip-Filter Sony alpha 7","offer_id":52384142786780,"sku":"usi1787937467890","price":339.99,"currency_code":"USD","in_stock":true},{"title":"MaxFR Clip-Filter Nikon XL","offer_id":52384142819548,"sku":"hcp1787937467891","price":331.16,"currency_code":"USD","in_stock":true},{"title":"MaxFR Clip-Filter Nikon Z XL","offer_id":52384142852316,"sku":"jca1787937467892","price":339.99,"currency_code":"USD","in_stock":true},{"title":"MaxFR 31mm","offer_id":52384142885084,"sku":"cch1787937467893","price":153.32,"currency_code":"USD","in_stock":true},{"title":"MaxFR 36mm","offer_id":52384142917852,"sku":"fli1787937467894","price":195.98,"currency_code":"USD","in_stock":true},{"title":"MaxFR 50mm","offer_id":52384142950620,"sku":"ajs1787937467895","price":262.91,"currency_code":"USD","in_stock":true},{"title":"MaxFR M52","offer_id":52384142983388,"sku":"qdm1787937467896","price":266.84,"currency_code":"USD","in_stock":true},{"title":"MaxFR 27mm unmounted","offer_id":52384143016156,"sku":"pwv1787937467897","price":106.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/astronomik-oiii-12nm-maxfr-ccd-filter_1.jpg?v=1787937472"},{"product_id":"astronomik-oiii-6nm-maxfr-ccd-filter","title":"Astronomik OIII 6nm MaxFR CCD Filter","description":"\u003ch2\u003eAstronomik OIII 6nm MaxFR CCD Filter\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThere is an ever growing demand for filters suitable for extremly fast optical systems like\u003cspan\u003e \u003c\/span\u003eCelestron´s\u003cspan\u003e \u003c\/span\u003eRASA the Epsilon Astrographs made by Takahashi.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOur novel MaxFR emission line filters are suitable up to very fast focal ratios. The new Astronomik MaxFR series of narrowband-emissionline filters is perfect matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha) and sulfur (SII) you may select your filters either with 12nm or 6nm Bandwidth (FWHM).\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003eOur new MaxFR filters are made in a completely new way, designed to work perfectly with fast optical systems. The built-in well known MFR Coating technique gives you the best out-of-band blocking possible across the entire range of wavelengths from the UV up to IR! Your advantage of our new design is a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eextremly high contrast\u003c\/strong\u003e, minimized stray light,\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003eno halos\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eneedle-sharp stars\u003c\/strong\u003e. The Astronomik MFR narrowband-emissionline filters give you the best quality of data: The best start material to be processed to a awesome final image!\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eFor 12nm MaxFR filters this means a unlimited usability from f\/1.7 to f\/8 and about 85% of the maximum transmission at a f\/1.4 as guaranteed.\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFor 6nm MaxFR filters this means a unlimited usability from f\/2.2 to f\/8 with about 90% of the maximum transmission at a f\/2 as guaranteed performance data.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor maximum contrast the SII filter is carefully designed to block all light coming from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emissionline Filters\u003c\/strong\u003e\u003cbr\u003eIf you have to observe from light polluted sites (like most of us...), imaging with narrowband-emissionline filters is the best way to take great images, as all kind of light pollution can be blocked very effective! Normaly an H-alpha filter should be your first step into this amazing field of astrophotography! With an Narrowband H-alpha filter you will be able to take deep and contrasty images even wih very heavy light pollution or with the full moon high up in the sky!\u003cbr\u003eIf you look at other astrophotos, an H-alpha is the best choice for all nebulas glowing red! An OIII filters expands your imaging possibilities, as you are able to image all greenish\/blueish structures. Planetary nebulas and star forming regions are great targets! The SII filters completes your HSO-set of filters. With these three filters you are able to process your images like the ones from the Hubble space telescope!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emissionline filters:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 12nm Filters can be used on all instruments down to f\/1.4, the 6nm filters down to f\/2.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality substrate:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAstronomik filters are made with stress- and striae free, opticaly polished glass. The filter itself is made of ultra thin layers on this substrate!\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParfocal filters:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAll Astronomik Filters are parfocal! Due to the very small thickness-tolerance the focal plane is not shifted when changing filters!\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAstronomik filters are made of up to 170 layers which are coated on both sides of the substrate. These layers form the filter itself and act as a Anti-Reflection Coating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability\u003c\/strong\u003e: Due to our coating technique all Astronomik filters are highly scratch resistant, not sensitive to moisture and do not degrade when getting older. Every Astronomik filter will deliver it´s full perfomance and meet the specs at the point of shipping even after lot´s of years.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegated Blocking:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAll unwanted light is blocked in the whole spectral range from UV up to the IR! (You will not need an additonal UV \u0026amp; IR-Blocker when imaging with any of our new narrowband-emissionline filters with  coating!)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide range of available sizes\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efrom 1,25\" up to square 50mm x 50mm filters.\u003c\/li\u003e\n\u003cli\u003eDelivered in a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ehigh-quality protection \u0026amp; storage box\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDue to our outstandding coating technique we do offer a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e10 year guarantee\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eon all of our filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYou get the highest quality possible with every single Astronomik filter to be able to take perfect images with your instruments! Especialy the filters against ligh pollution and the narrowband-emissionline filters will expand your imaging possibilities enormous! You are investing your money for an accessory which will work in lot´s of years in the same ways it did when it was brand new. Due to our special coating technique the filters do not degraed when getting older, and due to the new MFR coating you will be able to use the filter on nearly all instruments!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTypicall questions asked by customers looking for Narrowband-Emissionline Filters:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhich is the best full-width-half-maximum for me? 12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe question which full-width-half-maximum (FWHM) is the \"best\", shows up on in eMails on our monitor or when talking to customers at fairs very often. A general \"right\" or \"wrong\" or \"best\" does not make any sense. We would not offer both series if they were not needed.\u003cbr\u003eIf you have a camera with an extremly low dark current and effective cooling, the 6nm filters will give you major advantages: Due to the stronger blocking of the background you will be able to expose longer and get deeper images! All stars are very tiny points, most faint stars do not show up anymore! -This is a major advantage even for normal cameras, as you can take images of faint structures even in star-crowded regions of the milkyway!\u003cbr\u003eTo put it short: 12nm Filters are the right choice for all DSLRs and dark-current limited cameras.\u003cbr\u003e6nm filters are the best choice for observing sites with extrem strong light pollution, cameras with low dark-current and when weak objects require the maximum contrast and star-reduction possible!\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHow much is exposure time increased?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis question is asked quite often, and the answer is very easy: You don have to expose longer, but you MAY expose longer!\u003cbr\u003eDue to the high transmission of approximately 100% at the center wavelength nearly all emission line photons reach the sensor. So the number of for example \"H-alpha-photons\" does not change significant wether a H-alpha filter is installed or not. But looking at the photons of other wavelength, which wi do NOT want to record makes the effect of the filter clear: The combination of a very good blocking of all unwanted light from UV up to the IR and the narrow bandwidth of the filters reduces all unwanted signal on the sensor! If you do an exposure of 30sec without any filters from a lightpolluted urban observing site, your sky-background might be allready very, very bright or even saturated. The same image taken with an Narrowband-Emissionline filter will give you a perfect black background without any signal and the signal from the object will be about the same. With this black background you have the possibility to expose longer -propably 30min instead- to record fainter structures! So itś not a \"must\", it´s a \"can\".\u003c\/p\u003e\n\u003cp\u003e_________________________\u003c\/p\u003e\n\u003cdiv\u003e\u003cstrong\u003e\u003cspan\u003eAll  Astronomik Filters are perfect for modern cameras, including both CMOS and CCD based cameras, allowing you to capture the very best images possible with your instruments. Sharpness, contrast and the absence of any reflections is guaranteed.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eEach and every Astronomik filter has to pass a complex quality control process before being suitable for delivery to our customers. Each and every emission line filter is measured with a high-end Perkin-Elmer spectral-photometer to make sure that every single filter is up to the specifications published on our website.\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003e\u003cspan\u003e\u003cbr\u003eOn the back of each filter-box you will find a label that details the precise sensitivity and band pass measurements for that individual filter inside the box: You will see the max transmission and the recommended range of focal ratio were the filter will give you the best performance.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003e\u003cspan\u003e_________________________\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelected frame size Astronomik\u003cspan\u003e 6\u003c\/span\u003enm MaxFR CCD\u003cspan\u003e \u003c\/span\u003eFilter\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003ePlastic Storage Case\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 role=\"tabpanel\" aria-hidden=\"false\" aria-labelledby=\"tab-title-3\" data-content=\"tab-3\" class=\"tab__content tab.box tab__content--active\"\u003e\n\u003cbr\u003e\u003cspan\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003eAstronomik\u003cspan\u003e \u003c\/span\u003e10 year warranty\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"MaxFR 1.25\" (M28.5)","offer_id":52384143048924,"sku":"mch1787937467668","price":201.02,"currency_code":"USD","in_stock":true},{"title":"MaxFR 2\" (M48)","offer_id":52384143081692,"sku":"gcj1787937467669","price":534.2,"currency_code":"USD","in_stock":true},{"title":"MaxFR Clip-Filter EOS APS-C","offer_id":52384143114460,"sku":"jqb1787937467670","price":239.37,"currency_code":"USD","in_stock":true},{"title":"MaxFR Clip-Filter EOS XL","offer_id":52384143147228,"sku":"jjc1787937467671","price":508.39,"currency_code":"USD","in_stock":true},{"title":"MaxFR Clip-Filter EOS R XL","offer_id":52384143179996,"sku":"fgn1787937467672","price":515.99,"currency_code":"USD","in_stock":true},{"title":"MaxFR Clip-Filter Sony alpha 7","offer_id":52384143212764,"sku":"qnx1787937467673","price":454.07,"currency_code":"USD","in_stock":true},{"title":"MaxFR Clip-Filter Nikon XL","offer_id":52384143245532,"sku":"feg1787937467674","price":440.31,"currency_code":"USD","in_stock":true},{"title":"MaxFR Clip-Filter Nikon Z XL","offer_id":52384143278300,"sku":"uvg1787937467675","price":474.71,"currency_code":"USD","in_stock":true},{"title":"MaxFR 31mm","offer_id":52384143311068,"sku":"lib1787937467676","price":199.89,"currency_code":"USD","in_stock":true},{"title":"MaxFR 36mm","offer_id":52384143343836,"sku":"xxw1787937467677","price":302.16,"currency_code":"USD","in_stock":true},{"title":"MaxFR 50mm","offer_id":52384143376604,"sku":"zfj1787937467678","price":407.33,"currency_code":"USD","in_stock":true},{"title":"MaxFR M52","offer_id":52384143409372,"sku":"cwo1787937467679","price":515.17,"currency_code":"USD","in_stock":true},{"title":"MaxFR 50 x 50mm² unmounted","offer_id":52384143442140,"sku":"xcj1787937467680","price":515.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/astronomik-oiii-6nm-maxfr-ccd-filter_1.jpg?v=1787937473"},{"product_id":"shelyak-t-adapter-ba0027","title":"Shelyak T-Adapter (BA0027)","description":"\u003ch2\u003e\u003cspan data-mce-fragment=\"1\"\u003eShelyak T-Adapter\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eMount your\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eeShel fibre injection system\u003cspan data-mce-fragment=\"1\"\u003e , \u003c\/span\u003eALPY 600\u003cspan data-mce-fragment=\"1\"\u003e or \u003c\/span\u003eLISA\u003cspan data-mce-fragment=\"1\"\u003e spectrograph on a Schmidt-Cassegrain Telescope (typically with a \u003c\/span\u003e0.63x focal reducer\u003cspan data-mce-fragment=\"1\"\u003e).\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"et_pb_module et_pb_tabs et_pb_tabs_0\"\u003e\n\u003cdiv class=\"et_pb_all_tabs\"\u003e\n\u003cdiv class=\"et_pb_tab et_pb_tab_0 clearfix et_pb_active_content et-pb-active-slide\"\u003e\n\u003cdiv class=\"et_pb_tab_content\"\u003e\n\u003cp data-placeholder=\"Traduction\" dir=\"ltr\" class=\"tw-data-text tw-text-large tw-ta\" id=\"tw-target-text\"\u003e\u003cspan lang=\"en\"\u003eAdapter for Schmidt-Cassegrain Telescope (Celestron, Meade) to M42 in 2 parts (nut and ring).\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-placeholder=\"Traduction\" dir=\"ltr\" class=\"tw-data-text tw-text-large tw-ta\"\u003e\u003cspan lang=\"en\"\u003eIn the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-placeholder=\"Traduction\" dir=\"ltr\" class=\"tw-data-text tw-text-large tw-ta\"\u003e\u003cspan lang=\"en\"\u003eShelyak T-Adapter\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eShelyak 1-Year Warranty\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Shelyak","offers":[{"title":"Default Title","offer_id":52384143474908,"sku":"arj1787937469344","price":78.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/shelyak-t-adapter-ba0027_1.png?v=1787937474"},{"product_id":"sightron-light-pollution-lps-c1-filter-2-m48","title":"Sightron Light Pollution LPS-C1 Filter 2\" (M48)","description":"\u003ch2\u003eSightron LPS-C1 M48 Filter (2\")\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cdiv aria-labelledby=\"tab-title-description\" role=\"tabpanel\" id=\"tab-description\"\u003e\n\u003cp\u003e(LPS) Light Pollution Suppression Filter\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEffectively suppressing white LED sky glow\u003c\/li\u003e\n\u003cli\u003eMaintains the good color balance under the white LED dominant sky (See one of gallery images)\u003c\/li\u003e\n\u003cli\u003eAlso designed for enhancing the contrast of the comet emission lines\u003c\/li\u003e\n\u003cli\u003eGlass Type : Fused Quartz\u003c\/li\u003e\n\u003cli\u003eGlass thickness : 1.5mm\u003c\/li\u003e\n\u003cli\u003eM48 mounted\u003c\/li\u003e\n\u003cli\u003eMade in Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"IDAS","offers":[{"title":"Default Title","offer_id":52384143507676,"sku":"bdn1787937469881","price":132.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/sightron-light-pollution-lps-c1-filter-2-m48_1.webp?v=1787937474"},{"product_id":"astronomik-h-alpha-12nm-ccd-filter","title":"Astronomik H-alpha 12nm CCD Filter","description":"\u003ch2\u003eAstronomik H-alpha 12nm CCD Filter\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe Astronomik H-alpha filter is ideal for imaging HII regions from both light-polluted and dark observation sites.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Astronomik H-alpha filter significantly enhances the contrast between objects emitting light at 656nm (H-alpha line) and the sky background, allowing for long exposure times for deep and high-contrast images.\u003c\/p\u003e\n\u003cp\u003eThe filter blocks the emission lines of high- and low-pressure sodium (Na)- and mercury (Hg)-vapor lamps, the maxima of typical LED lights, most lines of natural airglow, as well as most of the distracting moonlight.\u003c\/p\u003e\n\u003cp\u003eThe Astronomik H-alpha filter effectively blocks all unwanted light from wavelengths other than 656nm, from ultraviolet (UV) to infrared (IR).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #b13b3c;\"\u003eThe Astronomik H-alpha filter MUST NOT BE USED for solar observation!\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eDifference between Astronomik 12nm, 6nm and 4nm filters\u003c\/h2\u003e\n\u003cp\u003eThe choice between 12nm, 6nm and 4nm Full-Width-Half-Maximum (FWHM) filters depends on your imaging conditions and camera type. There is no universal “best” option - each FWHM serves a specific purpose.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003e12nm Astronomik Narrowband-Emissionline filters\u003c\/strong\u003e are optimized for use with system cameras with CMOS sensors. They are also a good choice for CCD cameras with normal or high dark current. The 12nm filters are also the preferred choice for cameras with an integrated or dual guiding sensor, as they show more guiding stars compared to filters with 6nm or 4nm FWHM.\u003c\/p\u003e\n\u003cp\u003eThe 12nm filters are the most affordable way to get started with Narrowband-Emissionline filters. Usually, the background signal in images taken from suburban or dark-sky locations is limited by the sensor’s dark current rather than light pollution. Therefore, further suppression of the sky background by reducing the FWHM does not reveal more details of the object.\u003c\/p\u003e\n\u003ch2\u003eThe Astronomik MFR coating\u003c\/h2\u003e\n\u003cp\u003eBoth the Astronomik MFR and MaxFR coatings offer extremely high contrast, minimized stray light, no halos and needle-sharp stars. In addition, they provide the best possible blocking across the entire spectral range from UV to IR.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e12nm MFR-coated filters\u003c\/strong\u003e can be used in all instruments with aperture ratios from f\/3 to f\/15 without visible performance loss.\u003c\/p\u003e\n\u003ch2\u003eClip-Filters for mirrorless Canon EOS R APS-C cameras\u003c\/h2\u003e\n\u003cp\u003eCanon EOS R APS-C series cameras are an excellent choice for astrophotography. With Astronomik Clip-Filters, you can use our full range of filters with your camera to capture stunning images. Whether paired with a camera lens or a telescope, our clip filters ensure maximum image quality and performance from your setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Astronomik Clip-Filters offer a number of practical advantages that make them an ideal choice for astrophotographers:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalling and removing the Astronomik Clip-Filter is very quick and easy and requires no extra tools or modifications to the camera body. They can be changed at any time, even at night.\u003c\/li\u003e\n\u003cli\u003eAll lens functions, such as focus, aperture, and image stabilization remain fully functional.\u003c\/li\u003e\n\u003cli\u003eThe Astronomik Clip-Filters are held securely in place without stressing the high-quality glass.\u003c\/li\u003e\n\u003cli\u003eThe Astronomik Clip-Filters are designed and optimized for use with both standard camera lenses and telescopes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThrough the Astronomik Clip-Filters, we were able to solve several common issues faced by astrophotographers:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLarge filters for large camera lenses are very expensive.\u003c\/li\u003e\n\u003cli\u003eUsing a filter holder between the camera body and the lens prevents focusing to infinity.\u003c\/li\u003e\n\u003cli\u003eFor very fast telescopes (low f-number) like the Vixen R200SS or the Takahashi “Epsilon” astrograph, a filter drawer or filter wheel can not be used because the distance to the corrector lenses would be changed.\u003c\/li\u003e\n\u003cli\u003eLong exposure times lead to dust settling on the camera’s sensor chip.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditionally, all Astronomik EOS R APS-C Clip-Filters serve as an excellent dust shield, protecting the sensor during long exposures. If you only need a dust shield without filtering effects, the Astronomik MC-Clear EOS R APS-C Clip-Filter is the right choice.\u003c\/p\u003e\n\u003cp\u003eUse Astronomik filters for your Canon EOS R APS-C camera and enjoy marvelous images with an ultra-light equipment!\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #b13b3c;\"\u003eNOTE: Please store the Clip-Filter in the supplied storage box and do not leave it in the camera permanently.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eCompatible Canon EOS R APS-C cameras\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"text-align: center;\"\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R7\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 23px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R10\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 23px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R50\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 23px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R50 V\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 23px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R100\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 23px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eNon-compatible Canon lenses\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"text-align: center;\"\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 14mm f\/1.4 L VCM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 28mm F2.8 STM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 35mm F1.8 IS Macro STM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 85mm F1.2L USM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon Extender RF 2x\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon Extender RF 1.4x\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAstronomik filters are diffraction-limited, ensuring that the optical performance (resolution and contrast) of your telescope is not compromised. Thanks to the high-precision machining of the glas substrate, all Astronomik filters are parfocal. The wedge errors are far below all common tolerances. Therefore, all issues concerning focal distances and the exact alignment of images from each color channel are effectively eliminated.\u003c\/p\u003e\n\u003cp\u003eAll Astronomik filters are ideal for modern cameras, including both CMOS- and CCD-based models, ensuring you capture the best possible images with your equipment. Sharpness, contrast, and the absence of any reflections and halos are guaranteed. Even with bright stars in the field of view, nebulae and galaxies will be captured with the finest structures. The Astronomik MFR and MaxFR coatings are designed for optimal performance across a wide range of focal ratios of the optics used.\u003c\/p\u003e\n\u003cp\u003eEvery Astronomik filter undergoes a rigorous quality control process before delivery. Additionally, each Astronomik Narrowband-Emissionline filter is measured using a high-end PerkinElmer Spectrophotometer to ensure it meets the specifications published on our website. On the back of each Narrowband-Emissionline filter box, you will find a label detailing the precise spectral data for that specific filter, including the maximum transmission and the recommended range of focal ratios for best performance of that specific filter.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eGuaranteed transmission of more than 90% at the H-alpha line (656nm)\u003c\/li\u003e\n\u003cli\u003eTypical transmission of 96% at the H-alpha line\u003c\/li\u003e\n\u003cli\u003eFull-Width-Half Maximum (FWHM): 12nm\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm (except Astronomik OWB Type 3 and XT filters)\u003c\/li\u003e\n\u003cli\u003eFinely polished optical glass, free of any striae, residual stresses, and bubbles\u003c\/li\u003e\n\u003cli\u003eExtremely scratch-resistant and durable coating\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity and aging effects\u003c\/li\u003e\n\u003cli\u003eAstronomik MFR coating (Astronomik Deep-Sky RGB, UV-IR Block L-1, L-2, L-3, and Narrowband-Emissionline filters)\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eDiffraction-limited\u003c\/li\u003e\n\u003cli\u003eOptimized spectral windows\u003c\/li\u003e\n\u003cli\u003eDelivered in a high-quality, long-lasting filter box\u003c\/li\u003e\n\u003cli\u003eMade in Germany\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelected frame size of Astronomik H-alpha 12nm CCD Filter\u003c\/li\u003e\n\u003cli\u003ePlastic Storage Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"tab__content tab.box tab__content--active\" data-content=\"tab-3\" aria-labelledby=\"tab-title-3\" aria-hidden=\"false\" role=\"tabpanel\"\u003e\n\u003cspan\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003eAstronomik\u003cspan\u003e \u003c\/span\u003e10 year warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25\" (M28.5)","offer_id":52384143638748,"sku":"uiu1787937476768","price":105.17,"currency_code":"USD","in_stock":true},{"title":"2\" (M48)","offer_id":52384143671516,"sku":"dci1787937476769","price":205.89,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS APS-C","offer_id":52384143704284,"sku":"rkx1787937476770","price":131.21,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS R APS-C","offer_id":52384143737052,"sku":"oxp1787937476771","price":183.2,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS XL","offer_id":52384143769820,"sku":"iyb1787937476772","price":191.32,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS R XL","offer_id":52384143802588,"sku":"awi1787937476773","price":209.88,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS M","offer_id":52384143835356,"sku":"oin1787937476774","price":148.29,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Sony alpha 7","offer_id":52384143868124,"sku":"zqr1787937476775","price":253.19,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon XL","offer_id":52384143900892,"sku":"nec1787937476776","price":203.22,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon Z XL","offer_id":52384143933660,"sku":"pob1787937476777","price":213.22,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Pentax K-1","offer_id":52384143966428,"sku":"juh1787937476778","price":263.19,"currency_code":"USD","in_stock":true},{"title":"T-Mount (M42x0.75)","offer_id":52384143999196,"sku":"rmk1787937476779","price":179.86,"currency_code":"USD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":52384144031964,"sku":"gpn1787937476780","price":207.21,"currency_code":"USD","in_stock":true},{"title":"31mm","offer_id":52384144064732,"sku":"nxa1787937476781","price":108.04,"currency_code":"USD","in_stock":true},{"title":"36mm","offer_id":52384144097500,"sku":"exj1787937476782","price":118.87,"currency_code":"USD","in_stock":true},{"title":"50mm","offer_id":52384144130268,"sku":"lly1787937476783","price":247.78,"currency_code":"USD","in_stock":true},{"title":"M49","offer_id":52384144163036,"sku":"rbk1787937476784","price":244.64,"currency_code":"USD","in_stock":true},{"title":"M52","offer_id":52384144195804,"sku":"xnn1787937476785","price":236.34,"currency_code":"USD","in_stock":true},{"title":"27mm unmounted","offer_id":52384144228572,"sku":"nid1787937476786","price":95.39,"currency_code":"USD","in_stock":true},{"title":"42mm unmounted","offer_id":52384144261340,"sku":"fjr1787937476787","price":151.06,"currency_code":"USD","in_stock":true},{"title":"50 x 50mm² unmounted","offer_id":52384144294108,"sku":"tvd1787937476788","price":219.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/astronomik-h-alpha-12nm-ccd-filter_1.jpg?v=1787937485"},{"product_id":"astronomik-l-3-uv-ir-blocking-filter","title":"Astronomik L-3 UV-IR Blocking Filter","description":"\u003ch2 data-mce-fragment=\"1\"\u003eAstronomik L-3 UV-IR Blocking Filter\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAstronomik now offers you a range of three different UV+IR blockers as Luminance filters. The different spectral window of each new Luminance filters is designed to tune your setup to get the sharpest image from any optical design and any camera. \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cimg width=\"530\" title=\"Transmission Astronomik Lx Filter\" src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/AlleLxFilter_V2.png\" alt=\"Transmission Astronomik Lx Filter\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/AlleLxFilter_V2.png?width=700\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e The Luminance channel is probably the most important for a great final image! You want as much signal as possible so the filter should have the highest transmission possible with a wide spectral bandpass. This combination provides the greatest sensitivity and gives you the highest photon counts on your pixels. While the high transmission level is a great aspect of the new Astronomik Luminance filters, not all optical instruments or additional optical elements like correctors, field-flatteners or reducers, have perfect colour correction so it can be the width of the spectral band pass of  the Luminance filter that can cause problems. A band pass that is too wide will allow the transmission of incompletely focused light (Chromatic aberration), making stars appear soft or bloated. In such cases image processing can become difficult, so having a slightly narrowed spectral window in your Luminance filter can reduce or eliminate this damaging effect.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eTo give you all the tools to gather the best data possible we have expanded our line of Luminance filters: Now you can select a Luminance filter perfectly matched to the kind of telescope you use, to get the highest signal and sharpest image for the Luminance channel!\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDepending on the color correction of your scope you may use a wider spectral window for the Luminance data. The L1 filter has the widest spectral window, the L2 is about the same as our current L-Filter and the L3 is much narrower. If you use an optical system that is completely free of any chromatic aberration you should get an L1 filter for your setup. For general use the L2 filter is well suited to most optical systems with a corrector, flattener or reducer in the optical train while the L3 filter is designed for users of refractors with a less-than-perfect color correction and in combination with the new Deep-Sky RGB filters, the L3 filter will minimise the problem of bluish halos around stars.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe transmission curve characteristics and coatings on the new Luminance filters have been designed and engineered in such a way that no halos or reflections will be visible. Even with bright stars in the field of view you will be able to reveal the faintest structures in nebulas or galaxies.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eLike all Astronomik Filters, the new Luminance filters are made using an extremely durable and scratch resistant coating, deposited on the finest polished optical substrate, which is free of any striae or internal strains. All substrates are made to exactly the same thickness, so all of our filters are parfocal.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eAdditional note for observers working under light polluted skies:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eIf your observing site suffers from light pollution you should try to use our CLS-CCD as a replacement for the Luminance filter. The transmission curve of the CLS-CCD will give you approximately the same amount of energy in all three colour channels while blocking nearly all unwanted artifical light pollution. Customers who replaced the Lx filter with the CLS-CCD are amazed by the increased quality of their data. This small change gives you the opportunity to take much deeper images from your current observing site.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSelected frame size Astronomik L-3 UV-IR Filter\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePlastic Storage Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 role=\"tabpanel\" aria-hidden=\"false\" aria-labelledby=\"tab-title-3\" data-content=\"tab-3\" class=\"tab__content tab.box tab__content--active\" data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAstronomik\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e10 year 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data-mce-fragment=\"1\"\u003e \u003c\/span\u003eRASA the Epsilon Astrographs made by Takahashi.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eOur novel MaxFR emission line filters are suitable up to very fast focal ratios. The new Astronomik MaxFR series of narrowband-emissionline filters is perfect matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha) and sulfur (SII) you may select your filters either with 12nm or 6nm Bandwidth (FWHM).\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003eOur new MaxFR filters are made in a completely new way, designed to work perfectly with fast optical systems. The built-in well known MFR Coating technique gives you the best out-of-band blocking possible across the entire range of wavelengths from the UV up to IR! Your advantage of our new design is a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eextremly high contrast\u003c\/strong\u003e, minimized stray light,\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003eno halos\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eneedle-sharp stars\u003c\/strong\u003e. The Astronomik MFR narrowband-emissionline filters give you the best quality of data: The best start material to be processed to a awesome final image!\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eFor 12nm MaxFR filters this means a unlimited usability from f\/1.7 to f\/8 and about 85% of the maximum transmission at a f\/1.4 as guaranteed.\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFor 6nm MaxFR filters this means a unlimited usability from f\/2.2 to f\/8 with about 90% of the maximum transmission at a f\/2 as guaranteed performance data.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor maximum contrast the SII filter is carefully designed to block all light coming from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emissionline Filters\u003c\/strong\u003e\u003cbr\u003eIf you have to observe from light polluted sites (like most of us...), imaging with narrowband-emissionline filters is the best way to take great images, as all kind of light pollution can be blocked very effective! Normaly an H-alpha filter should be your first step into this amazing field of astrophotography! With an Narrowband H-alpha filter you will be able to take deep and contrasty images even wih very heavy light pollution or with the full moon high up in the sky!\u003cbr\u003eIf you look at other astrophotos, an H-alpha is the best choice for all nebulas glowing red! An OIII filters expands your imaging possibilities, as you are able to image all greenish\/blueish structures. Planetary nebulas and star forming regions are great targets! The SII filters completes your HSO-set of filters. With these three filters you are able to process your images like the ones from the Hubble space telescope!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emissionline filters:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 12nm Filters can be used on all instruments down to f\/1.4, the 6nm filters down to f\/2.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality substrate:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAstronomik filters are made with stress- and striae free, opticaly polished glass. The filter itself is made of ultra thin layers on this substrate!\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParfocal filters:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAll Astronomik Filters are parfocal! Due to the very small thickness-tolerance the focal plane is not shifted when changing filters!\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAstronomik filters are made of up to 170 layers which are coated on both sides of the substrate. These layers form the filter itself and act as a Anti-Reflection Coating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability\u003c\/strong\u003e: Due to our coating technique all Astronomik filters are highly scratch resistant, not sensitive to moisture and do not degrade when getting older. Every Astronomik filter will deliver it´s full perfomance and meet the specs at the point of shipping even after lot´s of years.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegated Blocking:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAll unwanted light is blocked in the whole spectral range from UV up to the IR! 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Especialy the filters against ligh pollution and the narrowband-emissionline filters will expand your imaging possibilities enormous! You are investing your money for an accessory which will work in lot´s of years in the same ways it did when it was brand new. Due to our special coating technique the filters do not degraed when getting older, and due to the new MFR coating you will be able to use the filter on nearly all instruments!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTypicall questions asked by customers looking for Narrowband-Emissionline Filters:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhich is the best full-width-half-maximum for me? 12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe question which full-width-half-maximum (FWHM) is the \"best\", shows up on in eMails on our monitor or when talking to customers at fairs very often. A general \"right\" or \"wrong\" or \"best\" does not make any sense. We would not offer both series if they were not needed.\u003cbr\u003eIf you have a camera with an extremly low dark current and effective cooling, the 6nm filters will give you major advantages: Due to the stronger blocking of the background you will be able to expose longer and get deeper images! All stars are very tiny points, most faint stars do not show up anymore! -This is a major advantage even for normal cameras, as you can take images of faint structures even in star-crowded regions of the milkyway!\u003cbr\u003eTo put it short: 12nm Filters are the right choice for all DSLRs and dark-current limited cameras.\u003cbr\u003e6nm filters are the best choice for observing sites with extrem strong light pollution, cameras with low dark-current and when weak objects require the maximum contrast and star-reduction possible!\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHow much is exposure time increased?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis question is asked quite often, and the answer is very easy: You don have to expose longer, but you MAY expose longer!\u003cbr\u003eDue to the high transmission of approximately 100% at the center wavelength nearly all emission line photons reach the sensor. So the number of for example \"H-alpha-photons\" does not change significant wether a H-alpha filter is installed or not. But looking at the photons of other wavelength, which wi do NOT want to record makes the effect of the filter clear: The combination of a very good blocking of all unwanted light from UV up to the IR and the narrow bandwidth of the filters reduces all unwanted signal on the sensor! If you do an exposure of 30sec without any filters from a lightpolluted urban observing site, your sky-background might be allready very, very bright or even saturated. The same image taken with an Narrowband-Emissionline filter will give you a perfect black background without any signal and the signal from the object will be about the same. With this black background you have the possibility to expose longer -propably 30min instead- to record fainter structures! So itś not a \"must\", it´s a \"can\".\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSelected frame size of Astronomik H-alpha 12nm CCD MaxFR Filter\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePlastic Storage Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"tab__content tab.box tab__content--active\" data-content=\"tab-3\" aria-labelledby=\"tab-title-3\" aria-hidden=\"false\" role=\"tabpanel\" data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAstronomik\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e10 year warranty\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25\" (M28.5)","offer_id":52384145211612,"sku":"kvu1787937479600","price":118.14,"currency_code":"USD","in_stock":true},{"title":"2\" (M48)","offer_id":52384145244380,"sku":"mlt1787937479601","price":255.07,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS APS-C","offer_id":52384145277148,"sku":"yut1787937479602","price":176.39,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS XL","offer_id":52384145309916,"sku":"vbw1787937479603","price":304.82,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS R XL","offer_id":52384145342684,"sku":"zol1787937479604","price":353.24,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Sony alpha 7","offer_id":52384145375452,"sku":"ogr1787937479605","price":291.42,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon XL","offer_id":52384145408220,"sku":"pwp1787937479606","price":295.84,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon Z XL","offer_id":52384145440988,"sku":"qxv1787937479607","price":291.42,"currency_code":"USD","in_stock":true},{"title":"31mm","offer_id":52384145473756,"sku":"bmm1787937479608","price":148.81,"currency_code":"USD","in_stock":true},{"title":"36mm","offer_id":52384145506524,"sku":"pnp1787937479609","price":146.99,"currency_code":"USD","in_stock":true},{"title":"50mm","offer_id":52384145539292,"sku":"hoj1787937479610","price":243.29,"currency_code":"USD","in_stock":true},{"title":"M52","offer_id":52384145572060,"sku":"eio1787937479611","price":302.16,"currency_code":"USD","in_stock":true},{"title":"27mm unmounted","offer_id":52384145604828,"sku":"mxn1787937479612","price":108.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/astronomik-h-alpha-12nm-ccd-maxfr-filter_1.jpg?v=1787937484"},{"product_id":"astronomik-sii-6nm-ccd-maxfr","title":"Astronomik SII 6nm CCD MaxFR","description":"\u003ch2\u003eAstronomik SII 6nm CCD MaxFR\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eThere is an ever growing demand for filters suitable for extremly fast optical systems like\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eCelestron´s\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eRASA the Epsilon Astrographs made by Takahashi.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eOur novel MaxFR emission line filters are suitable up to very fast focal ratios. The new Astronomik MaxFR series of narrowband-emissionline filters is perfect matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha) and sulfur (SII) you may select your filters either with 12nm or 6nm Bandwidth (FWHM).\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eHighest transmission:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003eOur new MaxFR filters are made in a completely new way, designed to work perfectly with fast optical systems. The built-in well known MFR Coating technique gives you the best out-of-band blocking possible across the entire range of wavelengths from the UV up to IR! Your advantage of our new design is a\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003eextremly high contrast\u003c\/strong\u003e, minimized stray light,\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eno halos\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eand\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003eneedle-sharp stars\u003c\/strong\u003e. The Astronomik MFR narrowband-emissionline filters give you the best quality of data: The best start material to be processed to a awesome final image!\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFor 12nm MaxFR filters this means a unlimited usability from f\/1.7 to f\/8 and about 85% of the maximum transmission at a f\/1.4 as guaranteed.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFor 6nm MaxFR filters this means a unlimited usability from f\/2.2 to f\/8 with about 90% of the maximum transmission at a f\/2 as guaranteed performance data.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003eFor maximum contrast the SII filter is carefully designed to block all light coming from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eImaging with Narrowband-Emissionline Filters\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eIf you have to observe from light polluted sites (like most of us...), imaging with narrowband-emissionline filters is the best way to take great images, as all kind of light pollution can be blocked very effective! Normaly an H-alpha filter should be your first step into this amazing field of astrophotography! With an Narrowband H-alpha filter you will be able to take deep and contrasty images even wih very heavy light pollution or with the full moon high up in the sky!\u003cbr data-mce-fragment=\"1\"\u003eIf you look at other astrophotos, an H-alpha is the best choice for all nebulas glowing red! An OIII filters expands your imaging possibilities, as you are able to image all greenish\/blueish structures. Planetary nebulas and star forming regions are great targets! The SII filters completes your HSO-set of filters. With these three filters you are able to process your images like the ones from the Hubble space telescope!\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eQuality aspects of the new Astronomik MFR narrowband-emissionline filters:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eMFR Coating:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eThe 12nm Filters can be used on all instruments down to f\/1.4, the 6nm filters down to f\/2.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eHigh-Quality substrate:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eAstronomik filters are made with stress- and striae free, opticaly polished glass. The filter itself is made of ultra thin layers on this substrate!\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eParfocal filters:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eAll Astronomik Filters are parfocal! Due to the very small thickness-tolerance the focal plane is not shifted when changing filters!\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eCoating:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eAstronomik filters are made of up to 170 layers which are coated on both sides of the substrate. These layers form the filter itself and act as a Anti-Reflection Coating.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eDurability\u003c\/strong\u003e: Due to our coating technique all Astronomik filters are highly scratch resistant, not sensitive to moisture and do not degrade when getting older. Every Astronomik filter will deliver it´s full perfomance and meet the specs at the point of shipping even after lot´s of years.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eIntegated Blocking:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eAll unwanted light is blocked in the whole spectral range from UV up to the IR! (You will not need an additonal UV \u0026amp; IR-Blocker when imaging with any of our new narrowband-emissionline filters with  coating!)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eWide range of available sizes\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003efrom 1,25\" up to square 50mm x 50mm filters.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eDelivered in a\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003ehigh-quality protection \u0026amp; storage box\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eDue to our outstandding coating technique we do offer a\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003e10 year guarantee\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eon all of our filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003eYou get the highest quality possible with every single Astronomik filter to be able to take perfect images with your instruments! Especialy the filters against ligh pollution and the narrowband-emissionline filters will expand your imaging possibilities enormous! You are investing your money for an accessory which will work in lot´s of years in the same ways it did when it was brand new. Due to our special coating technique the filters do not degraed when getting older, and due to the new MFR coating you will be able to use the filter on nearly all instruments!\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eTypicall questions asked by customers looking for Narrowband-Emissionline Filters:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eWhich is the best full-width-half-maximum for me? 12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe question which full-width-half-maximum (FWHM) is the \"best\", shows up on in eMails on our monitor or when talking to customers at fairs very often. A general \"right\" or \"wrong\" or \"best\" does not make any sense. We would not offer both series if they were not needed.\u003cbr data-mce-fragment=\"1\"\u003eIf you have a camera with an extremly low dark current and effective cooling, the 6nm filters will give you major advantages: Due to the stronger blocking of the background you will be able to expose longer and get deeper images! All stars are very tiny points, most faint stars do not show up anymore! -This is a major advantage even for normal cameras, as you can take images of faint structures even in star-crowded regions of the milkyway!\u003cbr data-mce-fragment=\"1\"\u003eTo put it short: 12nm Filters are the right choice for all DSLRs and dark-current limited cameras.\u003cbr data-mce-fragment=\"1\"\u003e6nm filters are the best choice for observing sites with extrem strong light pollution, cameras with low dark-current and when weak objects require the maximum contrast and star-reduction possible!\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eHow much is exposure time increased?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis question is asked quite often, and the answer is very easy: You don have to expose longer, but you MAY expose longer!\u003cbr data-mce-fragment=\"1\"\u003eDue to the high transmission of approximately 100% at the center wavelength nearly all emission line photons reach the sensor. So the number of for example \"H-alpha-photons\" does not change significant wether a H-alpha filter is installed or not. But looking at the photons of other wavelength, which wi do NOT want to record makes the effect of the filter clear: The combination of a very good blocking of all unwanted light from UV up to the IR and the narrow bandwidth of the filters reduces all unwanted signal on the sensor! If you do an exposure of 30sec without any filters from a lightpolluted urban observing site, your sky-background might be allready very, very bright or even saturated. The same image taken with an Narrowband-Emissionline filter will give you a perfect black background without any signal and the signal from the object will be about the same. With this black background you have the possibility to expose longer -propably 30min instead- to record fainter structures! So itś not a \"must\", it´s a \"can\".\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSelected frame size of Astronomik SII 6nm CCD MaxFR\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePlastic Storage Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"tab__content tab.box tab__content--active\" data-content=\"tab-3\" aria-labelledby=\"tab-title-3\" aria-hidden=\"false\" role=\"tabpanel\" data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAstronomik\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e10 year warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25\" (M28.5)","offer_id":52384145637596,"sku":"ggy1787937482816","price":163.99,"currency_code":"USD","in_stock":true},{"title":"2\" (M48)","offer_id":52384145670364,"sku":"moh1787937482817","price":400.65,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS APS-C","offer_id":52384145703132,"sku":"uqk1787937482818","price":313.93,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS XL","offer_id":52384145735900,"sku":"dbs1787937482819","price":474.5,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS R XL","offer_id":52384145768668,"sku":"egh1787937482820","price":412.79,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Sony alpha 7","offer_id":52384145801436,"sku":"xej1787937482821","price":515.99,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon XL","offer_id":52384145834204,"sku":"oky1787937482822","price":447.19,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon Z XL","offer_id":52384145866972,"sku":"fok1787937482823","price":495.35,"currency_code":"USD","in_stock":true},{"title":"31mm","offer_id":52384145899740,"sku":"lxb1787937482824","price":226.54,"currency_code":"USD","in_stock":true},{"title":"36mm","offer_id":52384145932508,"sku":"uak1787937482825","price":270.76,"currency_code":"USD","in_stock":true},{"title":"50mm","offer_id":52384145965276,"sku":"mhe1787937482826","price":440.72,"currency_code":"USD","in_stock":true},{"title":"M52","offer_id":52384145998044,"sku":"vmp1787937482827","price":501.62,"currency_code":"USD","in_stock":true},{"title":"50 x 50mm²","offer_id":52384146030812,"sku":"dra1787937482828","price":522.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/astronomik-sii-6nm-ccd-maxfr_1.jpg?v=1787937488"},{"product_id":"astronomik-proplanet-642-bp-ir-pass-filter","title":"Astronomik ProPlanet 642 BP IR-pass filter","description":"\u003ch1 data-mce-fragment=\"1\"\u003eAstronomik ProPlanet 642 BP IR-pass filter \u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h1\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eThe Astronomik ProPlanet 642 BP is the latest addition to the family of Astronomik ProPlanet IR-pass filters. The filter thrills because of it´s wide range of applications for daylight IR-Photography, high-resolution lunar and planetary imaging and for taking beautiful and deep images of H-alpha regions when used for Astrophotography.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/produktabbildungen\/astronomik\/transmission\/full\/ProPlanet642BP.png\" alt=\"Transmission curve\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.astronomik.com\/media\/produktabbildungen\/astronomik\/transmission\/full\/ProPlanet642BP.png?width=700\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\"BP\" are short for \"Bandpass\": The filter gives you a 200nm spectral window from 642nm to 842nm. Contrary to the other two ProPlanet filters it blocks the longer infrared. Together with the Astronmik ProPlanet 742 and the ProPlanet 807 you can now have three choices to match your needs when imaging in the IR. The Astronomik ProPlanet 642 BP will be the right choice for the best image quite often!\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eHighlight of the Astronomik ProPlanet 642 BP: Three filter in one!\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe Astronomik ProPlanet 642 BP will give you three filters in one single product! Depending on your camera, the Astronomik ProPlanet 642 BP is a great tool either for daylight IR-imaging with your digital camera, or it will reduce seeing effects and enhance contrast when used for lunar- and planetary imaging, and third it will be a very good and low-priced H-alpha Filter for getting started in Deep-Sky Astrophotography of H-alpha regions.\u003cbr data-mce-fragment=\"1\"\u003eDue to our skillfull developement with lot´s of tests we reached the goal to give you a filter which will do a perfect job to deliver amazing images.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eDaylight IR-imaging:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003econtrasty images with a great rendition of colors\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eClear \"Wood-Effect\" images\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eNot Hot-Spot from longer IR!\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eShort exposure times, about the same as normal VIS-imaging\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eperfect choice for Infrared-Videos\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eHigh-resolution Lunar and planetary imaging:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eshort Exposure times\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eeffective reduction of Seeing\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eenhanced contrast\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eno ghosts and best sharpness due to blocking the longer IR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eDeep-Sky Astrophotography of HII regions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003ebest transmission of the H-alpha line at 656nm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eabout 40nm FWHM with astro-modified DSLRs\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eamazing contrast under lightpolluted skies or moonlight\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003elow priced filter for getting started in H-alpha imaging\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eeasy focussing using camera display plus LiveView!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eGuiding for Astrophotography:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003einstalling the 642BP in front of your autoguider-camera dramaticly improves guiding quality, as image-motion from one frame to the next is minimized.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\n\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eDetailed description of the opportunities the Astronomik ProPlanet 642 BP will give you:\u003c\/strong\u003e\n\u003c\/h4\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\u003cstrong\u003e1) Daylight IR-imaging:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003eStarting point for the development of the Astronomik ProPlanet 642 BP was infrared imaging at daylight with modified DSLR cameras.\u003cbr data-mce-fragment=\"1\"\u003eNormal, unmodified DSLRs do have a built in Infrared-Blocking-Filter as the sensors alone are sensitive up to 1100nm. If this internal filter is removed, the camera can be used for for the thrilling field of infrared imaging.\u003cbr data-mce-fragment=\"1\"\u003eThe Astronomik ProPlanet 642 BP opens it´s window allready in the very deep red and gives you all light up to 842nm. You get images which are perfectly suited for channl-changeing, and which will show an incredible level of colors and great contrast do to the blocking of the longer IR: A great set of data to start creative image processing!\u003cbr data-mce-fragment=\"1\"\u003eThe following image give you an impression of the possibilities of IR photography:\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eMove the green slider in the lower left corner to highlight the difference.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cdiv class=\"image-slider\" data-mce-fragment=\"1\"\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/gallery\/BeforeAfter\/after.jpg\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/gallery\/BeforeAfter\/after.jpg?width=700\"\u003e\u003c\/div\u003e\n\u003cimg src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/gallery\/BeforeAfter\/before.jpg\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/gallery\/BeforeAfter\/before.jpg?width=700\"\u003e\n\u003c\/div\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eVilladeati\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e- a village on the hills of Piedmont, Italy -\u003cbr data-mce-fragment=\"1\"\u003e(c) Domenico Rota\u003cbr data-mce-fragment=\"1\"\u003eAstronomik 642BP im Vergleich zum UV IR Block Filter\u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003c\/strong\u003e \u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\u003cstrong\u003e2) High-Resolution Lunar \u0026amp; Planetary imaging\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003eHigh-Resolution imaging of the moon and the planets is a part of astrophotography which has evolved in the past 20 years at an incredible speed. Amateurs from all over the world can take images which were far beyond reach even for the very best equiped professional observatories 20 years ago.\u003cbr data-mce-fragment=\"1\"\u003eYou will need a low noise video-camera and dedicated image-processing like AstroStakkert, Registax or AviStack plus a infrared-pass filter to enter this field of astrophotography!\u003cbr data-mce-fragment=\"1\"\u003eWhy Infrared? Every observer knows the flickering stars and planetary disks when looking through an eyepiece or at your monitor Slight differences in temperature and preasure result in a different index of refraction for \"bubbles\" of air. As these bubbles move, the image moves too! This effect is called \"Seeing\".\u003cbr data-mce-fragment=\"1\"\u003eThis change in the index of refraction becomes smaller the further you go to the infrared (longer wavlengths), and due to that, the Seeing becomes better too!\u003cbr data-mce-fragment=\"1\"\u003eWhen observing with the human eye we have no options: The human eye is not sensitive to infrared light. But with the CCD or CMOS sensors from our camera we can go to the infrared part of the spectrum and enjoy the steady air.\u003cbr data-mce-fragment=\"1\"\u003eAn Infrared-Pass filter like the Astronomik ProPlanet 642 BP blocks all unwanted visual light and gives you infrared light only!\u003cbr data-mce-fragment=\"1\"\u003eThe amount of seeing is changeing very fast, so there is no universal filter that will do it every time. So the Astronomik ProPlanet 642 BP is the third filter in this line of Products in addition to the Astronomik ProPlanet 742 and ProPlanet 807! When seeing is no really bad, the ProPlanet 642 BP will be usually the first choice and will give you best results as it blocks the longer IR too!\u003cbr data-mce-fragment=\"1\"\u003eWhile we were developing this new filter, several observers had our prototype filters for testing. Most of them reported that the Astronomik ProPlanet 642 BP gave them the very best images compared with filters from other manufacturers. The sharpness and high contrast resulted in the best final images in nearly all situations!\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cimg width=\"400px\" src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/gallery\/Jupiter_Michael_Karrer.JPG\" alt=\"\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/gallery\/Jupiter_Michael_Karrer.JPG?width=700\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eJupiter with Ganymed\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e(c) Karl Thurner\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cimg width=\"400px\" src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/gallery\/Luethen_Jupiter_IRRGB.jpg\" alt=\"\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/gallery\/Luethen_Jupiter_IRRGB.jpg?width=700\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eJupiter With Ganymed\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e(c) Hartwig Luethen\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eDo you use the AstronomikProPlanet 642 BP for lunar and planetary imaging? Share us you best images with us!\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\n\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003e3) Deep-Sky astrophotography of H-alpha regions:\u003c\/strong\u003e\n\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Astronomik ProPlanet 642 BP has allready reached it´s full transmission of nearly 100% at the famous line of H-alpha at 656nm. -All light coming from the beautifull HII regions can reach the sensor of your camera, while all shorter light and nearly all artifical light pollution is filtered out!\u003cbr data-mce-fragment=\"1\"\u003eCombined with a typical astro-modified DSLR you will get a spectral window of about 40nm which results in a very dark background and a high contrast. With the Astronomik ProPlanet 642 BP installed in your camera, it´s possible to do nice shoots of H-alpha regions even when the moon is up: Lunar stray light is filtered out very effective!\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\"How long do I have to expose longer?\" -That´s a very common question from custmers from all over the world.\u003cbr data-mce-fragment=\"1\"\u003eThe answer is quite easy: You don´t have to expose longer, you MAY expose longer!\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eDue to the high transmission of nearly 100% you will have the same amound of photons with a wavelength of 656nm on your sensor, wether you have the filter installed or not. But, with the Astronomik ProPlanet 642 BP installed, the background sky will be very dark, while it would be very bright -or even saturated- when imaging without the filter! The filter blocks photons with other energies and give you a higher contrast. With the filter installed you MAY expose longer to collect more photons from your object of desire till the background is getting brighter again!\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eA narrow band emission-line filter like the Astronomik H-alpha filter with 12nm or 6nm FWHM will do the job much better (it blocks more of the unwanted light), but the lower price of the Astronomik ProPlanet 642 BP is very attractive for beginners in this field of astrophotography! Additional to that the real emission line filters are quite difficult to use for beginners as focusing can be quite difficult with them. With the Astronomik ProPlanet 642 BP you will usually have enough light to use the LiveView monitor on the back of your camera!\u003cbr data-mce-fragment=\"1\"\u003eTaken all this together the new Astronomik ProPlanet 642 BP is the ideal filter for getting started in H-alpha imaging with your modified DSLR!\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/California_400px.jpg\" alt=\"California Nebula with Astronomik ProPlanet 642BP\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/California_400px.jpg?width=700\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eCalifornia Nebula imaged with a Canon 80D(mod) and Astronomik ProPlanet 642BP Clip-Filter\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e(c) Thomas Tomz Henriksen, Dänemark\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003emore then 96% transmission for wavelengths of 642nm to 840nm\u003c\/li\u003e\n\u003cli\u003eblocking of wavelengths between 350nm and 630nm\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\u003cli\u003eSince 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSelected frame size of Astronomik ProPlanet 642 BP\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePlastic Storage Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 role=\"tabpanel\" aria-hidden=\"false\" aria-labelledby=\"tab-title-3\" data-content=\"tab-3\" class=\"tab__content tab.box tab__content--active\" data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAstronomik\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e10 year warranty\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25\" (M28.5)","offer_id":52384146292956,"sku":"itw1787937485006","price":62.44,"currency_code":"USD","in_stock":true},{"title":"2\" (M48)","offer_id":52384146325724,"sku":"qyw1787937485007","price":105.17,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS APS-C","offer_id":52384146358492,"sku":"qdz1787937485008","price":77.15,"currency_code":"USD","in_stock":true},{"title":"XT Clip-Filter EOS APS-C","offer_id":52384146391260,"sku":"abu1787937485009","price":96.66,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS XL","offer_id":52384146424028,"sku":"xvo1787937485010","price":92.42,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS R XL","offer_id":52384146456796,"sku":"ruk1787937485011","price":109.7,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS M","offer_id":52384146489564,"sku":"ovx1787937485012","price":80.78,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Sony alpha 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and durability, making the Astronomik MC-Clear filter the perfect choice for protecting your optics or sensors (e.g. Schmidt-Cassegrain telescopes, Schmidt-Newton telescopes, Maksutov systems, and DSLR cameras) from dust particles and airborne contaminants without affecting the sensitivity of the camera or the eye, altering colors or destroying the optical performance of your system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eParfocality\u003c\/strong\u003e: The Astronomik MC-Clear glass is manufactured to the same high standards as other Astronomik filters, ensuring it is parfocal with other Astronomik filters. This means it can be used interchangeably with other filters without affecting the focus.\u003c\/p\u003e\n\u003cp\u003eThe filter is multicoated to prevent unwanted reflections and does not block infrared (IR) or ultraviolet (UV) light.\u003c\/p\u003e\n\u003cp\u003eAstronomik MC-Clear filter are highly regarded by camera manufacturers worldwide for their superior coating and scratch resistance, available in various custom diameters.\u003c\/p\u003e\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\u003cp\u003eThe Astronomik MC Clear is made by the same high-end process as all other Astronomik filters. The coating has the same scratch resistance and the substrate has the same high quality. Because of this it is parfocal with all other Astronomik filters and can be used in any optical system for dust protection without modifying the spectral characteristics and without destroying the optical performance of your system.\u003c\/p\u003e\n\u003ch4\u003eOther uses\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eAs a dust protection of Schmidt-Cassegrain, Schmidt-Newton or Maksutov system or as a dust protection in front of DSLR camera.\u003c\/li\u003e\n\u003cli\u003eAs an alternative instead of the UV-IR-Blocker if your system has no refracting elements.\u003c\/li\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAlternatives\u003c\/h4\u003e\n\u003cp\u003eYou should think about using the IR-blocker or even the UV-IR blocker if you have a system with any refracting elements.\u003c\/p\u003e\n\u003cp\u003emore information about the photographic Astronomik filters\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/produktabbildungen\/astronomik\/transmission\/full\/astronomik-mc-clear_trans.png?width=700\" alt=\"Transmissionsgraphik\"\u003e\u003c\/p\u003e\n\u003ch2\u003eSuitability of the Astronomik MC-Clear filters\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observation\u003c\/strong\u003e: For dust protection only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCMOS and CCD photography\u003c\/strong\u003e: Good, to compensate the optical thickness of other Astronomik filters; dust protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSLR photography\u003c\/strong\u003e: If applicable, to compensate the optical thickness after modifications; dust protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWebcam and video\u003c\/strong\u003e: For dust protection only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eClip-Filters for mirrorless Canon EOS R APS-C cameras\u003c\/h2\u003e\n\u003cp\u003eCanon EOS R APS-C series cameras are an excellent choice for astrophotography. With Astronomik Clip-Filters, you can use our full range of filters with your camera to capture stunning images. Whether paired with a camera lens or a telescope, our clip filters ensure maximum image quality and performance from your setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Astronomik Clip-Filters offer a number of practical advantages that make them an ideal choice for astrophotographers:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalling and removing the Astronomik Clip-Filter is very quick and easy and requires no extra tools or modifications to the camera body. They can be changed at any time, even at night.\u003c\/li\u003e\n\u003cli\u003eAll lens functions, such as focus, aperture, and image stabilization remain fully functional.\u003c\/li\u003e\n\u003cli\u003eThe Astronomik Clip-Filters are held securely in place without stressing the high-quality glass.\u003c\/li\u003e\n\u003cli\u003eThe Astronomik Clip-Filters are designed and optimized for use with both standard camera lenses and telescopes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThrough the Astronomik Clip-Filters, we were able to solve several common issues faced by astrophotographers:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLarge filters for large camera lenses are very expensive.\u003c\/li\u003e\n\u003cli\u003eUsing a filter holder between the camera body and the lens prevents focusing to infinity.\u003c\/li\u003e\n\u003cli\u003eFor very fast telescopes (low f-number) like the Vixen R200SS or the Takahashi “Epsilon” astrograph, a filter drawer or filter wheel can not be used because the distance to the corrector lenses would be changed.\u003c\/li\u003e\n\u003cli\u003eLong exposure times lead to dust settling on the camera’s sensor chip.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditionally, all Astronomik EOS R APS-C Clip-Filters serve as an excellent dust shield, protecting the sensor during long exposures. If you only need a dust shield without filtering effects, the Astronomik MC-Clear EOS R APS-C Clip-Filter is the right choice.\u003c\/p\u003e\n\u003cp\u003eUse Astronomik filters for your Canon EOS R APS-C camera and enjoy marvelous images with an ultra-light equipment!\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #b13b3c;\"\u003eNOTE: Please store the Clip-Filter in the supplied storage box and do not leave it in the camera permanently.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Reasonable, for dust protection only\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Reasonable, for dust protection only\u003c\/li\u003e\n\u003cli\u003eFilm photography: Reasonable, for dust protection only\u003c\/li\u003e\n\u003cli\u003eCCD photography: Good, to compensate the optical thickness (parfocal with other Astronomik filters); dust protection\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Reasonable, for dust protection only\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Reasonable, for dust protection only\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Reasonable, for dust protection only\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Reasonable, for dust protection only\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Reasonable, for dust protection only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatible Canon EOS R APS-C cameras\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"text-align: center;\"\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R7\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 23px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R10\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 23px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R50\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 23px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R50 V\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 23px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R100\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 23px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch4\u003eNon-compatible Canon lenses\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"text-align: center;\"\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 14mm f\/1.4 L VCM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 28mm F2.8 STM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 35mm F1.8 IS Macro STM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 85mm F1.2L USM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon Extender RF 2x\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon Extender RF 1.4x\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003cp\u003eAstronomik filters are diffraction-limited, ensuring that the optical performance (resolution and contrast) of your telescope is not compromised. Thanks to the high-precision machining of the glas substrate, all Astronomik filters are parfocal. The wedge errors are far below all common tolerances. Therefore, all issues concerning focal distances and the exact alignment of images from each color channel are effectively eliminated.\u003c\/p\u003e\n\u003cp\u003eAll Astronomik filters are ideal for modern cameras, including both CMOS- and CCD-based models, ensuring you capture the best possible images with your equipment. Sharpness, contrast, and the absence of any reflections and halos are guaranteed. Even with bright stars in the field of view, nebulae and galaxies will be captured with the finest structures. The Astronomik MFR and MaxFR coatings are designed for optimal performance across a wide range of focal ratios of the optics used.\u003c\/p\u003e\n\u003cp\u003eEvery Astronomik filter undergoes a rigorous quality control process before delivery.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSuitable for all focal ratios\u003c\/li\u003e\n\u003cli\u003eTypical transmission: \u0026gt;99%\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm (except Astronomik OWB Type 3 and XT filters)\u003c\/li\u003e\n\u003cli\u003eFinely polished optical glass, free of any striae, residual stresses, and bubbles\u003c\/li\u003e\n\u003cli\u003eExtremely scratch-resistant and durable coating\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity and aging effects\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eDiffraction-limited\u003c\/li\u003e\n\u003cli\u003eDelivered in a high-quality, long-lasting filter box\u003c\/li\u003e\n\u003cli\u003eMade in Germany\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelected frame size of Astronomik MC-clear Filter\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePlastic Storage Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 role=\"tabpanel\" aria-hidden=\"false\" aria-labelledby=\"tab-title-3\" data-content=\"tab-3\" class=\"tab__content tab.box tab__content--active\"\u003e\n\u003cspan\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003eAstronomik\u003cspan\u003e \u003c\/span\u003e10 year warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25\" (M28.5)","offer_id":52384147275996,"sku":"hto1787937485429","price":31.96,"currency_code":"USD","in_stock":true},{"title":"2\" (M48)","offer_id":52384147308764,"sku":"fdj1787937485430","price":65.58,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS APS-C","offer_id":52384147341532,"sku":"zlp1787937485431","price":48.39,"currency_code":"USD","in_stock":true},{"title":"XT Clip-Filter EOS APS-C","offer_id":52384147374300,"sku":"qsv1787937485432","price":60.59,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS XL","offer_id":52384147407068,"sku":"xuk1787937485433","price":59.51,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS R XL","offer_id":52384147439836,"sku":"llj1787937485434","price":84.49,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS M","offer_id":52384147472604,"sku":"abe1787937485435","price":68.2,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS R APS-C","offer_id":52384147505372,"sku":"dgr1787937485436","price":57.71,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Sony alpha 7","offer_id":52384147538140,"sku":"ite1787937485437","price":84.49,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon XL","offer_id":52384147570908,"sku":"swy1787937485438","price":78.05,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon Z XL","offer_id":52384147603676,"sku":"yde1787937485439","price":81.28,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Pentax K-1","offer_id":52384147636444,"sku":"vpq1787937485440","price":82.35,"currency_code":"USD","in_stock":true},{"title":"T-Mount (M42x0.75)","offer_id":52384147669212,"sku":"bty1787937485441","price":46.83,"currency_code":"USD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":52384147701980,"sku":"cny1787937485442","price":61.46,"currency_code":"USD","in_stock":true},{"title":"31mm","offer_id":52384147734748,"sku":"kkn1787937485443","price":47.69,"currency_code":"USD","in_stock":true},{"title":"36mm","offer_id":52384147767516,"sku":"qzw1787937485444","price":50.95,"currency_code":"USD","in_stock":true},{"title":"50mm","offer_id":52384147800284,"sku":"fhd1787937485445","price":55.96,"currency_code":"USD","in_stock":true},{"title":"M49","offer_id":52384147833052,"sku":"hsj1787937485446","price":68.98,"currency_code":"USD","in_stock":true},{"title":"M52","offer_id":52384147865820,"sku":"pyh1787937485447","price":72.73,"currency_code":"USD","in_stock":true},{"title":"M55","offer_id":52384147898588,"sku":"uor1787937485448","price":115.89,"currency_code":"USD","in_stock":true},{"title":"M58","offer_id":52384147931356,"sku":"ern1787937485449","price":99.76,"currency_code":"USD","in_stock":true},{"title":"M62","offer_id":52384147964124,"sku":"obu1787937485450","price":115.51,"currency_code":"USD","in_stock":true},{"title":"M67","offer_id":52384147996892,"sku":"hss1787937485451","price":99.73,"currency_code":"USD","in_stock":true},{"title":"M72","offer_id":52384148029660,"sku":"ykl1787937485452","price":111.36,"currency_code":"USD","in_stock":true},{"title":"M77","offer_id":52384148062428,"sku":"kia1787937485453","price":125.19,"currency_code":"USD","in_stock":true},{"title":"27mm unmounted","offer_id":52384148095196,"sku":"ieh1787937485454","price":31.3,"currency_code":"USD","in_stock":true},{"title":"42mm unmounted","offer_id":52384148127964,"sku":"cva1787937485455","price":40.47,"currency_code":"USD","in_stock":true},{"title":"50 x 50mm² unmounted","offer_id":52384148160732,"sku":"lyk1787937485456","price":64.32,"currency_code":"USD","in_stock":true},{"title":"Filter for Canon EOS 1000D \/ 40D-250D \/ 450D-800D \/ 7D \/ M \/ M6 MkII","offer_id":52384148193500,"sku":"ick1787937485457","price":52.99,"currency_code":"USD","in_stock":true},{"title":"Filter for Canon EOS 1100D-4000D \/ M3 \/ M5","offer_id":52384148226268,"sku":"oly1787937485458","price":42.8,"currency_code":"USD","in_stock":true},{"title":"Filter for Canon EOS 5D Mk2 \/ 5D Mk3","offer_id":52384148259036,"sku":"ffn1787937485459","price":49.17,"currency_code":"USD","in_stock":true},{"title":"Filter for Canon EOS 6D \/ 5D \/ R \/ Rp","offer_id":52384148291804,"sku":"ffu1787937485460","price":56.2,"currency_code":"USD","in_stock":true},{"title":"Filter for Canon EOS 350D \/ 20 D \/ 20Da \/ 30D","offer_id":52384148324572,"sku":"gex1787937485461","price":39.31,"currency_code":"USD","in_stock":true},{"title":"Filter for Canon EOS M50","offer_id":52384148357340,"sku":"zhm1787937485462","price":45.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/astronomik-mc-clear-filter_1.jpg?v=1787937495"},{"product_id":"astronomik-sii-12nm-ccd-maxfr-filter","title":"Astronomik SII 12nm CCD MaxFR Filter","description":"\u003ch2 data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eAstronomik SII 12nm CCD MaxFR Filter\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eThere is an ever growing demand for filters suitable for extremly fast optical systems like\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eCelestron´s\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eRASA the Epsilon Astrographs made by Takahashi.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eOur novel MaxFR emission line filters are suitable up to very fast focal ratios. The new Astronomik MaxFR series of narrowband-emissionline filters is perfect matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha) and sulfur (SII) you may select your filters either with 12nm or 6nm Bandwidth (FWHM).\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eHighest transmission:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003eOur new MaxFR filters are made in a completely new way, designed to work perfectly with fast optical systems. The built-in well known MFR Coating technique gives you the best out-of-band blocking possible across the entire range of wavelengths from the UV up to IR! Your advantage of our new design is a\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003eextremly high contrast\u003c\/strong\u003e, minimized stray light,\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eno halos\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eand\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003eneedle-sharp stars\u003c\/strong\u003e. The Astronomik MFR narrowband-emissionline filters give you the best quality of data: The best start material to be processed to a awesome final image!\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFor 12nm MaxFR filters this means a unlimited usability from f\/1.7 to f\/8 and about 85% of the maximum transmission at a f\/1.4 as guaranteed.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFor 6nm MaxFR filters this means a unlimited usability from f\/2.2 to f\/8 with about 90% of the maximum transmission at a f\/2 as guaranteed performance data.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003eFor maximum contrast the SII filter is carefully designed to block all light coming from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eImaging with Narrowband-Emissionline Filters\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eIf you have to observe from light polluted sites (like most of us...), imaging with narrowband-emissionline filters is the best way to take great images, as all kind of light pollution can be blocked very effective! Normaly an H-alpha filter should be your first step into this amazing field of astrophotography! With an Narrowband H-alpha filter you will be able to take deep and contrasty images even wih very heavy light pollution or with the full moon high up in the sky!\u003cbr data-mce-fragment=\"1\"\u003eIf you look at other astrophotos, an H-alpha is the best choice for all nebulas glowing red! An OIII filters expands your imaging possibilities, as you are able to image all greenish\/blueish structures. Planetary nebulas and star forming regions are great targets! The SII filters completes your HSO-set of filters. With these three filters you are able to process your images like the ones from the Hubble space telescope!\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eQuality aspects of the new Astronomik MFR narrowband-emissionline filters:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eMFR Coating:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eThe 12nm Filters can be used on all instruments down to f\/1.4, the 6nm filters down to f\/2.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eHigh-Quality substrate:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eAstronomik filters are made with stress- and striae free, opticaly polished glass. The filter itself is made of ultra thin layers on this substrate!\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eParfocal filters:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eAll Astronomik Filters are parfocal! Due to the very small thickness-tolerance the focal plane is not shifted when changing filters!\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eCoating:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eAstronomik filters are made of up to 170 layers which are coated on both sides of the substrate. These layers form the filter itself and act as a Anti-Reflection Coating.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eDurability\u003c\/strong\u003e: Due to our coating technique all Astronomik filters are highly scratch resistant, not sensitive to moisture and do not degrade when getting older. Every Astronomik filter will deliver it´s full perfomance and meet the specs at the point of shipping even after lot´s of years.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eIntegated Blocking:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eAll unwanted light is blocked in the whole spectral range from UV up to the IR! (You will not need an additonal UV \u0026amp; IR-Blocker when imaging with any of our new narrowband-emissionline filters with  coating!)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eWide range of available sizes\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003efrom 1,25\" up to square 50mm x 50mm filters.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eDelivered in a\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003ehigh-quality protection \u0026amp; storage box\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eDue to our outstandding coating technique we do offer a\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003e10 year guarantee\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eon all of our filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003eYou get the highest quality possible with every single Astronomik filter to be able to take perfect images with your instruments! Especialy the filters against ligh pollution and the narrowband-emissionline filters will expand your imaging possibilities enormous! You are investing your money for an accessory which will work in lot´s of years in the same ways it did when it was brand new. Due to our special coating technique the filters do not degraed when getting older, and due to the new MFR coating you will be able to use the filter on nearly all instruments!\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eTypicall questions asked by customers looking for Narrowband-Emissionline Filters:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eWhich is the best full-width-half-maximum for me? 12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe question which full-width-half-maximum (FWHM) is the \"best\", shows up on in eMails on our monitor or when talking to customers at fairs very often. A general \"right\" or \"wrong\" or \"best\" does not make any sense. We would not offer both series if they were not needed.\u003cbr data-mce-fragment=\"1\"\u003eIf you have a camera with an extremly low dark current and effective cooling, the 6nm filters will give you major advantages: Due to the stronger blocking of the background you will be able to expose longer and get deeper images! All stars are very tiny points, most faint stars do not show up anymore! -This is a major advantage even for normal cameras, as you can take images of faint structures even in star-crowded regions of the milkyway!\u003cbr data-mce-fragment=\"1\"\u003eTo put it short: 12nm Filters are the right choice for all DSLRs and dark-current limited cameras.\u003cbr data-mce-fragment=\"1\"\u003e6nm filters are the best choice for observing sites with extrem strong light pollution, cameras with low dark-current and when weak objects require the maximum contrast and star-reduction possible!\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eHow much is exposure time increased?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis question is asked quite often, and the answer is very easy: You don have to expose longer, but you MAY expose longer!\u003cbr data-mce-fragment=\"1\"\u003eDue to the high transmission of approximately 100% at the center wavelength nearly all emission line photons reach the sensor. So the number of for example \"H-alpha-photons\" does not change significant wether a H-alpha filter is installed or not. But looking at the photons of other wavelength, which wi do NOT want to record makes the effect of the filter clear: The combination of a very good blocking of all unwanted light from UV up to the IR and the narrow bandwidth of the filters reduces all unwanted signal on the sensor! If you do an exposure of 30sec without any filters from a lightpolluted urban observing site, your sky-background might be allready very, very bright or even saturated. The same image taken with an Narrowband-Emissionline filter will give you a perfect black background without any signal and the signal from the object will be about the same. With this black background you have the possibility to expose longer -propably 30min instead- to record fainter structures! So itś not a \"must\", it´s a \"can\".\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSelected frame size of Astronomik H-alpha 6nm CCD MaxFR Filter\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePlastic Storage Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 role=\"tabpanel\" aria-hidden=\"false\" aria-labelledby=\"tab-title-3\" data-content=\"tab-3\" class=\"tab__content tab.box tab__content--active\" data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAstronomik\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e10 year warranty\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25\" (M28.5)","offer_id":52384148390108,"sku":"lfz1787937490145","price":107.56,"currency_code":"USD","in_stock":true},{"title":"2\" (M48)","offer_id":52384148422876,"sku":"nkk1787937490146","price":286.46,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS APS-C","offer_id":52384148455644,"sku":"fvv1787937490147","price":195.98,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS XL","offer_id":52384148488412,"sku":"uws1787937490148","price":263.63,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS R XL","offer_id":52384148521180,"sku":"dta1787937490149","price":335.58,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Sony alpha 7","offer_id":52384148553948,"sku":"xre1787937490150","price":339.99,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon XL","offer_id":52384148586716,"sku":"lnb1787937490151","price":264.93,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon Z XL","offer_id":52384148619484,"sku":"bwa1787937490152","price":300.25,"currency_code":"USD","in_stock":true},{"title":"31mm","offer_id":52384148652252,"sku":"caf1787937490153","price":135.28,"currency_code":"USD","in_stock":true},{"title":"36mm","offer_id":52384148685020,"sku":"fjg1787937490154","price":188.63,"currency_code":"USD","in_stock":true},{"title":"50mm","offer_id":52384148717788,"sku":"oap1787937490155","price":235.45,"currency_code":"USD","in_stock":true},{"title":"M52","offer_id":52384148750556,"sku":"nkq1787937490156","price":262.91,"currency_code":"USD","in_stock":true},{"title":"27mm unmounted","offer_id":52384148783324,"sku":"jwt1787937490157","price":121.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/astronomik-sii-12nm-ccd-maxfr-filter_1.jpg?v=1787937495"},{"product_id":"astronomik-proplanet-807-ir-pass-filter","title":"Astronomik ProPlanet 807 IR-pass filter","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cb\u003eAstronomik ProPlanet 807 IR-pass filter\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cb\u003eIdeal addition to the Astronomik ProPlanet IR 742 for imaging the moon and planets, with telescopes larger then 10\" (250mm) when the seeing is poor.\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThis filter is an ideal complement to the ProPlanet IR 742 for use with converted DSLR cameras, CCD cameras and Webcams. The effects of seeing are distinctly reduced. It is your entry into previously unknown dimensions of photography of the moon and the planets.\u003cbr\u003e\u003cbr\u003eThe ProPlanet IR 807 only allows infrared light with wavelengths of more than 807 nm to pass. In this wavelength range the effects of seeing are significantly lower than in the visible spectrum of the human eye. This allows much sharper images than are usually obtained from your device and location. Another advantage is that the sky background of advanced dawn is dark and even allows photography of planets and moon at daylight.\u003c\/p\u003e\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\u003cp\u003eThe Astronomik ProPlanet IR 807 cuts off the visible part of the spectrum and allows the light of wavelengths longer then 807nm to pass. Due to this behavior the part of the spectrum that is most sensitive to bad seeing is rejected. This approach does a big improvement to the imaging of planets and the moon. The image is more steady than the image in the visible light.\u003c\/p\u003e\n\u003cp\u003e\u003cimg width=\"500\" title=\"Jupiter, aufgenommen mit L-RGB Filtern und Astrnomik ProPlanet 742 (Alexei Pace, Malta)\" src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/Astronomik_ProPlanet742_vs_LRGB_Jupiter.png?width=700\" height=\"263\" alt=\"Jupiter, aufgenommen mit L-RGB Filtern und Astrnomik ProPlanet 742\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eJupiter, imaged with L-RGB Filtern (left) and Astronomik ProPlanet 742 (right)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg title=\"Comparing sharpness in IR-R-G-B at Saturn\" src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/Vergleich_RGB-vs-IR-Pass_filter.png?width=700\" alt=\"Comparing sharpness in IR-R-G-B at Saturn\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eComparing sharpness in IR-R-G-B at Saturn\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg title=\"Comparing L-RGB versus IR-RGB at Saturn\" src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/Vergleich_L-RGB-vs-IR-RGB.png?width=700\" alt=\"Comparing L-RGB versus IR-RGB at Saturn\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eComparing L-RGB versus IR-RGB at Saturn\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003eOther uses\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eThe Astronomik ProPlanet IR 807 is designed to be an addition to the Astronomik ProPlanet IR 742, if the seeing is extremely bad and a larger telescope is used.\u003c\/li\u003e\n\u003cli\u003eFor most cameras the exposure times doubles, compared to the Astronomik ProPlanet IR 742 or imaging in visible light, if the Astronomik ProPlanet IR 807 is used.\u003c\/li\u003e\n\u003cli\u003eDarkens the background during twilight.\u003c\/li\u003e\n\u003cli\u003eImaging of bright planets, stars and comets by day.\u003c\/li\u003e\n\u003cli\u003eImaging of young stars in dust clouds and stellar nurseries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAlternatives\u003c\/h4\u003e\n\u003cp\u003eIf the seeing is not so bad or if the telescope is smaller than 10\" (250mm) we recommend the use of the Astronomik ProPlanet IR 742.\u003c\/p\u003e\n\u003cp\u003emore information about the photographic Astronomik filters\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"Transmissionsgraphik\" src=\"https:\/\/www.astronomik.com\/media\/produktabbildungen\/astronomik\/transmission\/full\/astronomik-proplanet-807_trans.png?width=700\"\u003e\u003c\/p\u003e\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Unsuitable, the eye is insensitive at this spectrum\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Unsuitable, the eye is insensitive at this spectrum\u003c\/li\u003e\n\u003cli\u003eFilm photography: Unsuitable\u003c\/li\u003e\n\u003cli\u003eCCD photography: Reasonable, for special IR photography (as chlorophyll)\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Unsuitable\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Unsuitable\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Good, for IR daylight photography, longer exposure time\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Very good, rejects problems with seeing, particularly with telescopes larger 250 mm aperture\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Very good, rejects problems with seeing, particularly with telescopes larger 250 mm aperture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003emore then 97% transmission for wavelengths of 807nm to 1100nm\u003c\/li\u003e\n\u003cli\u003eblocking of wavelengths between 350nm and 790nm\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\u003cli\u003eSince 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSelected frame size of Astronomik ProPlanet 807 IR-pass filter\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePlastic Storage Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 role=\"tabpanel\" aria-hidden=\"false\" aria-labelledby=\"tab-title-3\" data-content=\"tab-3\" class=\"tab__content tab.box tab__content--active\" data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAstronomik\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e10 year warranty\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25\" (M28.5)","offer_id":52384148816092,"sku":"glw1787937490676","price":42.2,"currency_code":"USD","in_stock":true},{"title":"2\" (M48)","offer_id":52384148848860,"sku":"pfz1787937490677","price":73.75,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS APS-C","offer_id":52384148881628,"sku":"mzs1787937490678","price":66.45,"currency_code":"USD","in_stock":true},{"title":"XT Clip-Filter EOS APS-C","offer_id":52384148914396,"sku":"faq1787937490679","price":69.52,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS XL","offer_id":52384148947164,"sku":"wvf1787937490680","price":96.66,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS R XL","offer_id":52384148979932,"sku":"lcr1787937490681","price":105.17,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS M","offer_id":52384149012700,"sku":"ktl1787937490682","price":57.8,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Sony alpha 7","offer_id":52384149045468,"sku":"wlv1787937490683","price":84.68,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon XL","offer_id":52384149078236,"sku":"xrt1787937490684","price":90.3,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon Z XL","offer_id":52384149111004,"sku":"ggk1787937490685","price":107.9,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Pentax K-1","offer_id":52384149143772,"sku":"pri1787937490686","price":90.14,"currency_code":"USD","in_stock":true},{"title":"T-Mount (M42x0.75)","offer_id":52384149176540,"sku":"ild1787937490687","price":69.27,"currency_code":"USD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":52384149209308,"sku":"rgs1787937490688","price":94.24,"currency_code":"USD","in_stock":true},{"title":"31mm","offer_id":52384149242076,"sku":"htm1787937490689","price":55.42,"currency_code":"USD","in_stock":true},{"title":"36mm","offer_id":52384149274844,"sku":"xyc1787937490690","price":57.84,"currency_code":"USD","in_stock":true},{"title":"50mm","offer_id":52384149307612,"sku":"hel1787937490691","price":71.41,"currency_code":"USD","in_stock":true},{"title":"M49","offer_id":52384149340380,"sku":"ebv1787937490692","price":77.4,"currency_code":"USD","in_stock":true},{"title":"M52","offer_id":52384149373148,"sku":"emx1787937490693","price":99.7,"currency_code":"USD","in_stock":true},{"title":"M55","offer_id":52384149405916,"sku":"ffd1787937490694","price":153.32,"currency_code":"USD","in_stock":true},{"title":"M58","offer_id":52384149438684,"sku":"vul1787937490695","price":178.12,"currency_code":"USD","in_stock":true},{"title":"M62","offer_id":52384149471452,"sku":"zqu1787937490696","price":180.38,"currency_code":"USD","in_stock":true},{"title":"M67","offer_id":52384149504220,"sku":"twt1787937490697","price":156.79,"currency_code":"USD","in_stock":true},{"title":"M72","offer_id":52384149536988,"sku":"rry1787937490698","price":183.73,"currency_code":"USD","in_stock":true},{"title":"M77","offer_id":52384149569756,"sku":"guw1787937490699","price":195.98,"currency_code":"USD","in_stock":true},{"title":"27mm unmounted","offer_id":52384149602524,"sku":"cug1787937490700","price":39.02,"currency_code":"USD","in_stock":true},{"title":"42mm unmounted","offer_id":52384149635292,"sku":"ccm1787937490701","price":48.39,"currency_code":"USD","in_stock":true},{"title":"50 x 50mm² unmounted","offer_id":52384149668060,"sku":"yks1787937490702","price":85.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/astronomik-proplanet-807-ir-pass-filter_1.jpg?v=1787937499"},{"product_id":"astronomik-owb-ccd-type-3-filter","title":"Astronomik OWB-CCD Type 3 filter","description":"\u003ch2\u003eAstronomik OWB-CCD Type 3 filter\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe OWB filter would usually not be designated as an \"astronomical\" filter. The intention is to enable converted DSLR cameras (without inbuilt IR-filter) in order to be used for 'terrestrial' photography.\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe OWB (Original White Balance) filter shifts the complete spectrum of a converted DSLR in such a manner that the camera will not be exclusively usable for astro-photography. Therefore the decision, which in former times had to be made, whether to 'victimize' a DSLR in order to exclusively use it for astronomical tasks or accept the lower sensitivity on the red end of the spectrum it is now a thing of the past and disencumber your purse, too.\u003cbr\u003e\u003cbr\u003eThe OWB filter is available as Clip-Filter for the most often used cameras for astrophotography.\u003c\/p\u003e\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\u003cp\u003eDSLR cameras which have been converted for astronomical use by removing the inbuilt IR-filter or by substituting it with a filter with greater range for H-alpha, have a white balance that made them unable for 'terrestrial' purpose. The spectral sensitivity of the DSLR will be changed by an OWB-Filter to the former range. In other words: The OWB pretend to be the conventional built-in filter!\u003c\/p\u003e\n\u003ch4\u003eOther uses\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eNone\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/produktabbildungen\/astronomik\/transmission\/full\/astronomik_owb-ccd_trans.png?width=700\" alt=\"Transmissionsgraphik\"\u003e\u003c\/p\u003e\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Unsuitable\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Unsuitable\u003c\/li\u003e\n\u003cli\u003eFilm photography: Unsuitable\u003c\/li\u003e\n\u003cli\u003eCCD photography: Unsuitable\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Unsuitable\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Very good, achieves a standard white balance for 'terrestrial' photography\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Very good, achieves a standard white balance for 'terrestrial' photography\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Unsuitable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSpecial spectrum in order to adapt modified DSLR cameras (removed or substituted inbuilt IR-filter) to achieve standard colour space in digital imaging.\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSelected frame size of Astronomik OWB-CCD Type 3 filter\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePlastic Storage Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 role=\"tabpanel\" aria-hidden=\"false\" aria-labelledby=\"tab-title-3\" data-content=\"tab-3\" class=\"tab__content tab.box tab__content--active\" data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAstronomik\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e10 year warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"Clip-Filter EOS APS-C","offer_id":52384149733596,"sku":"flr1787937496582","price":100.48,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS XL","offer_id":52384149766364,"sku":"vkd1787937496583","price":121.67,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS R XL","offer_id":52384149799132,"sku":"kxr1787937496584","price":163.67,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS M","offer_id":52384149831900,"sku":"eyv1787937496585","price":95.61,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Sony alpha 7","offer_id":52384149864668,"sku":"qgo1787937496586","price":152.76,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon XL","offer_id":52384149897436,"sku":"gdu1787937496587","price":141.0,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon Z XL","offer_id":52384149930204,"sku":"cxf1787937496588","price":155.06,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Pentax K-1","offer_id":52384149962972,"sku":"fqr1787937496589","price":129.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/astronomik-owb-ccd-type-3-filter_1.jpg?v=1787937502"},{"product_id":"astronomik-sii-6nm-ccd-filters","title":"Astronomik SII 6nm CCD Filters","description":"\u003ch2 data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eAstronomik SII 6nm CCD Filters\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eThis SII-CCD Filter is suitable for imaging of SII-regions from observation sites with light pollution and from dark sites as well. The contrast between an object glowing at 672nm and the background is increased enormous!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDue to the combination of the narrow bandwidth of 6nm and the high transmission of typically 96% the filter gives you an enormous contrast boost, as all unwanted light from other wavelengths than 672nm is blocked form UV up to the IR. This results in an extremly dark background.\u003cbr data-mce-fragment=\"1\"\u003eThe FWHM of 6nm is matched to give you optimal performance with CCD and CMOS sensors with a very low dark current! The 6nm filter is the best choice if you are observing from a heavily light polluted site or if you are imaging faint objects in starcrowded regions of the milkyway.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eDue to the new MFR coating technique you may use one single filter on all instruments up to f\/4 without a significant reduction in performance.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eImaging with Narrowband-Emissionline Filters\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eIf you have to observe from light polluted sites (like most of us...), imaging with Narrowband-Emissionline filters is the best way to take great images, as all kind of light pollution can be blocked very effective! Normaly an H-alpha filter should be your first step into this amazing field of astrophotography! With an Narrowband H-alpha filter you will be able to take deep and contrasty images even wih very heavy light pollution or with the full moon high up in the sky!\u003cbr data-mce-fragment=\"1\"\u003eIf you look at other astrophotos, an H-alpha is the best choice for all nebulas glowing red! An OIII filters expands your imaging possibilities, as you are able to image all greenish\/blueish structures. Planetary nebulas and star forming regions are great targets! The SII filters completes your HSO-set of filters. With these three filters you are able to process your images like the ones from the Hubble space telescope!\u003cbr data-mce-fragment=\"1\"\u003eThe h-beta filter is not available in a 6nm version, as this filter has nearly no meaningfull application. To illustrate this, there are two images shown below: Both were taken with a unmodified Canon 650D. Even as the camera has a sensitivity of less than 10% at H-alpha, there is some signal und structure in the h-alpha image, while you cannot see anything on the image taken with an H-beta filter!\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eOperation of the filter:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe filter blocks all unwanted light from artifical light-pollution, natural airglow and moonlight. Especially light from High- and Low-Pressure Sodium and mercury lights and all lines of natural airglow are 100% blocked. The filter increases the contrast between the sky-background and objects glowing at the xx line at xy nm.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eTips and Hints for more applications:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eUsing the xx filter together with OIII-CCD and SII-CCD filters you make produce false-color emission line images (HSO) in the same way as the Hubble-Space telescope. This is possible even from heavyly light polluted sites!\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eAlternatives:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe lower priced 12nm filters are the right choice for you, if you own a typical DSLR or a CCD camera with a high dark current! The 12nm filters should be the fist choice for cameras with an integrated guiding sensor, as you will have about twice as much stars compared to the 6nm filter.\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eTechnical data of the filter:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eGuaranteed Transmission of more than 90% at both SII lines (671,7nm und 673,0nm)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eTypical Transmission of 94% at both SII lines (671,7nm und 673,0nm)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eFull-Width-Half Maximum (FWHM): 6nm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eperfect blocking of unwanted light from UV up to the IR\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eparfokal with all Astronomik filters\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMFR Coating technique: Usable with all optics up to f\/4\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eThickness of 1mm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eNot sensitive to moisture, scratch resistant, not aging\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eopticaly polished substrate, striae-free and free of residual stresses\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eHigh quality storage box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-fragment=\"1\"\u003e___________\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-fragment=\"1\"\u003e\n\u003cstrong\u003eAll Astronomik Filters are perfect for modern cameras, including both CMOS and CCD based cameras, allowing you to capture the very best images possible with your instruments. Sharpness, contrast and the absence of any reflections is guaranteed.\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eEach and every Astronomik filter has to pass a complex quality control process before being suitable for delivery to our customers. Each and every emission line filter is measured with a high-end Perkin-Elmer spectral-photometer to make sure that every single filter is up to the specifications published on our website.\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eOn the back of each filter-box you will find a label that details the precise sensitivity and band pass measurements for that individual filter inside the box: You will see the max transmission and the recommended range of focal ratio were the filter will give you the best performance.\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-fragment=\"1\"\u003e___________\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-fragment=\"1\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-fragment=\"1\"\u003e\n\u003ch3 style=\"text-align: left;\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cp\u003eSelected frame size of Astronomik SII 6nm CCD Filter\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cp\u003ePlastic Storage Case\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003ch3 class=\"tab__content tab.box tab__content--active\" data-content=\"tab-3\" aria-labelledby=\"tab-title-3\" aria-hidden=\"false\" role=\"tabpanel\" style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003eAstronomik\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e10 year warranty\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"1.25\" (M28.5)","offer_id":52384150028508,"sku":"aup1787937499937","price":131.21,"currency_code":"USD","in_stock":true},{"title":"2\" (M48)","offer_id":52384150061276,"sku":"xxj1787937499938","price":332.1,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS APS-C","offer_id":52384150094044,"sku":"amf1787937499939","price":211.77,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS XL","offer_id":52384150126812,"sku":"rpc1787937499940","price":377.83,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS R XL","offer_id":52384150159580,"sku":"opa1787937499941","price":317.4,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS M","offer_id":52384150192348,"sku":"sea1787937499942","price":194.46,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Sony alpha 7","offer_id":52384150225116,"sku":"six1787937499943","price":306.56,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon XL","offer_id":52384150257884,"sku":"euj1787937499944","price":358.2,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon Z XL","offer_id":52384150290652,"sku":"rpc1787937499945","price":416.26,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Pentax K-1","offer_id":52384150323420,"sku":"ylh1787937499946","price":328.76,"currency_code":"USD","in_stock":true},{"title":"T-Mount (M42x0.75)","offer_id":52384150356188,"sku":"yuu1787937499947","price":259.3,"currency_code":"USD","in_stock":true},{"title":"31mm","offer_id":52384150388956,"sku":"gcm1787937499948","price":149.44,"currency_code":"USD","in_stock":true},{"title":"36mm","offer_id":52384150421724,"sku":"ebr1787937499949","price":223.54,"currency_code":"USD","in_stock":true},{"title":"50mm","offer_id":52384150454492,"sku":"sdm1787937499950","price":308.03,"currency_code":"USD","in_stock":true},{"title":"M49","offer_id":52384150487260,"sku":"gjf1787937499951","price":392.55,"currency_code":"USD","in_stock":true},{"title":"M52","offer_id":52384150520028,"sku":"jod1787937499952","price":368.02,"currency_code":"USD","in_stock":true},{"title":"27mm unmounted","offer_id":52384150552796,"sku":"plk1787937499953","price":133.17,"currency_code":"USD","in_stock":true},{"title":"42mm unmounted","offer_id":52384150585564,"sku":"wwz1787937499954","price":261.5,"currency_code":"USD","in_stock":true},{"title":"50 x 50mm² unmounted","offer_id":52384150618332,"sku":"yty1787937499955","price":338.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/astronomik-sii-6nm-ccd-filters_1.jpg?v=1787937505"},{"product_id":"svbony-sv220-7nm-dual-band-nebula-filter-ha-oiii","title":"Svbony SV220 7nm Dual-Band Nebula Filter Ha \u0026 OIII","description":"\u003ch2\u003eSvbony 7nm Dual-Band Nebula Filter Ha \u0026amp; OIII\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDual Narrow bandwidth H-Alpha\/O-III 7nm narrowband filter properly designed for astrophotography both in light polluted\u003c\/li\u003e\n\u003cli\u003eTake color images without needing to combine images with multiple filters\u003c\/li\u003e\n\u003cli\u003eUseful for imaging emission nebulae, planetary nebulae and supernova remnants\u003c\/li\u003e\n\u003cli\u003eDesigned to sharply cut off the inference of artificial light from sodium vapor or mercury vapor street lights and other unwanted disturbance like sky glow\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20230306\/6381369372334549875781772.jpg?width=700\" alt=\"SV220 Dual-Band 7nm Nebula Filter\" height=\"477\" width=\"771\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDual Narrow bandwidth H-Alpha\/O-III 7nm narrowband filter properly designed for astrophotography both in light polluted\u003c\/li\u003e\n\u003cli\u003eAllows for imaging in bright man-made light pollution and moonlit conditions\u003c\/li\u003e\n\u003cli\u003eTake color images without needing to combine images with multiple filters\u003c\/li\u003e\n\u003cli\u003eMost useful for One-Shot Color cameras\u003c\/li\u003e\n\u003cli\u003eUseful for imaging emission nebulae, planetary nebulae and supernova remnants\u003c\/li\u003e\n\u003cli\u003eHigh transmission and sharp cut-off can greatly enhance the contrast and bring out the most detailed information for those deep-sky objects\u003c\/li\u003e\n\u003cli\u003eDesigned to sharply cut off the inference of artificial light from sodium vapor or mercury vapor street lights and other unwanted disturbance like sky glow\u003c\/li\u003e\n\u003cli\u003eThe duo-band narrowband filter is not suitable for visual observation and not designed for imaging or observing the Sun\u003c\/li\u003e\n\u003cli\u003eBe aware that the SV220 is not a great fit for fast telescopes, some users reported that the Duo-Band OSC Filter paired with the RASA caused band shift, thus clipping the HA data.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv class=\"quill-better-table-wrapper\"\u003e\n\u003ctable class=\"quill-better-table\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"100\"\u003e \u003ccol width=\"100\"\u003e \u003ccol width=\"100\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr data-row=\"1\"\u003e\n\u003ctd data-row=\"1\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"1\" data-cell=\"1\" data-rowspan=\"1\" data-colspan=\"1\"\u003eBrand\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"1\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"1\" data-cell=\"2\" data-rowspan=\"1\" data-colspan=\"1\"\u003eSVBONY\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"1\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"1\" data-cell=\"3\" data-rowspan=\"1\" data-colspan=\"1\"\u003eSVBONY\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-row=\"2\"\u003e\n\u003ctd data-row=\"2\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"2\" data-cell=\"1\" data-rowspan=\"1\" data-colspan=\"1\"\u003eModel\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"2\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"2\" data-cell=\"2\" data-rowspan=\"1\" data-colspan=\"1\"\u003eSV220\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"2\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"2\" data-cell=\"3\" data-rowspan=\"1\" data-colspan=\"1\"\u003eSV220\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-row=\"3\"\u003e\n\u003ctd data-row=\"3\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"3\" data-cell=\"1\" data-rowspan=\"1\" data-colspan=\"1\"\u003eName\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"3\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"3\" data-cell=\"2\" data-rowspan=\"1\" data-colspan=\"1\"\u003eDuo-Band OSC Filter\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"3\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"3\" data-cell=\"3\" data-rowspan=\"1\" data-colspan=\"1\"\u003eDuo-Band OSC Filter\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-row=\"4\"\u003e\n\u003ctd data-row=\"4\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"4\" data-cell=\"1\" data-rowspan=\"1\" data-colspan=\"1\"\u003eSize\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"4\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"4\" data-cell=\"2\" data-rowspan=\"1\" data-colspan=\"1\"\u003e2-Inch\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"4\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"4\" data-cell=\"3\" data-rowspan=\"1\" data-colspan=\"1\"\u003e1.25-Inch\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-row=\"5\"\u003e\n\u003ctd data-row=\"5\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"5\" data-cell=\"1\" data-rowspan=\"1\" data-colspan=\"1\"\u003eSubstrate Thickness\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"5\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"5\" data-cell=\"2\" data-rowspan=\"1\" data-colspan=\"1\"\u003e1.80mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"5\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"5\" data-cell=\"3\" data-rowspan=\"1\" data-colspan=\"1\"\u003e1.85mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-row=\"6\"\u003e\n\u003ctd data-row=\"6\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"6\" data-cell=\"1\" data-rowspan=\"1\" data-colspan=\"1\"\u003eClear Aperture\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"6\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"6\" data-cell=\"2\" data-rowspan=\"1\" data-colspan=\"1\"\u003e44mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"6\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"6\" data-cell=\"3\" data-rowspan=\"1\" data-colspan=\"1\"\u003e26mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-row=\"7\"\u003e\n\u003ctd data-row=\"7\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"7\" data-cell=\"1\" data-rowspan=\"1\" data-colspan=\"1\"\u003eWavelength Range\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"7\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"7\" data-cell=\"2\" data-rowspan=\"1\" data-colspan=\"1\"\u003e300-1100nm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"7\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"7\" data-cell=\"3\" data-rowspan=\"1\" data-colspan=\"1\"\u003e300-1100nm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-row=\"8\"\u003e\n\u003ctd data-row=\"8\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"8\" data-cell=\"1\" data-rowspan=\"1\" data-colspan=\"1\"\u003eFWHM\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"8\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"8\" data-cell=\"2\" data-rowspan=\"1\" data-colspan=\"1\"\u003eOIII (7nm) \u0026amp; HA (7nm) \u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"8\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"8\" data-cell=\"3\" data-rowspan=\"1\" data-colspan=\"1\"\u003eOIII (7nm) \u0026amp; HA (7nm)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-row=\"9\"\u003e\n\u003ctd data-row=\"9\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"9\" data-cell=\"1\" data-rowspan=\"1\" data-colspan=\"1\"\u003eBlocking\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"9\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"9\" data-cell=\"2\" data-rowspan=\"1\" data-colspan=\"1\"\u003eOD5\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"9\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"9\" data-cell=\"3\" data-rowspan=\"1\" data-colspan=\"1\"\u003e\u0026gt;OD5\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-row=\"10\"\u003e\n\u003ctd data-row=\"10\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"10\" data-cell=\"1\" data-rowspan=\"1\" data-colspan=\"1\"\u003ePeak transmittance\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"10\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"10\" data-cell=\"2\" data-rowspan=\"1\" data-colspan=\"1\"\u003e500.7nm@T\u0026gt;90%; 656.3nm@T\u0026gt;94%\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"10\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"10\" data-cell=\"3\" data-rowspan=\"1\" data-colspan=\"1\"\u003e500.7nm@T\u0026gt;90%; 656.3nm@T\u0026gt;94%\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-row=\"11\"\u003e\n\u003ctd data-row=\"11\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"11\" data-cell=\"1\" data-rowspan=\"1\" data-colspan=\"1\"\u003eSurface Quality\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"11\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"11\" data-cell=\"2\" data-rowspan=\"1\" data-colspan=\"1\"\u003e60\/40 \u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"11\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"11\" data-cell=\"3\" data-rowspan=\"1\" data-colspan=\"1\"\u003e60\/40\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-row=\"12\"\u003e\n\u003ctd data-row=\"12\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"12\" data-cell=\"1\" data-rowspan=\"1\" data-colspan=\"1\"\u003eSurface parallelism\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"12\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"12\" data-cell=\"2\" data-rowspan=\"1\" data-colspan=\"1\"\u003e1\/4λ\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"12\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"12\" data-cell=\"3\" data-rowspan=\"1\" data-colspan=\"1\"\u003e1\/4λ\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-row=\"13\"\u003e\n\u003ctd data-row=\"13\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"13\" data-cell=\"1\" data-rowspan=\"1\" data-colspan=\"1\"\u003eThread\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"13\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"13\" data-cell=\"2\" data-rowspan=\"1\" data-colspan=\"1\"\u003eM48x0.75\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"13\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"13\" data-cell=\"3\" data-rowspan=\"1\" data-colspan=\"1\"\u003eM28.5*0.6\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-row=\"14\"\u003e\n\u003ctd data-row=\"14\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"14\" data-cell=\"1\" data-rowspan=\"1\" data-colspan=\"1\"\u003eSingle Thread\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"14\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"14\" data-cell=\"2\" data-rowspan=\"1\" data-colspan=\"1\"\u003eYes\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"14\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"14\" data-cell=\"3\" data-rowspan=\"1\" data-colspan=\"1\"\u003eYes\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-row=\"15\"\u003e\n\u003ctd data-row=\"15\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"15\" data-cell=\"1\" data-rowspan=\"1\" data-colspan=\"1\"\u003eNet Weight\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"15\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"15\" data-cell=\"2\" data-rowspan=\"1\" data-colspan=\"1\"\u003e12.5g \/ 0.44oz \/0.027lb\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-row=\"15\" rowspan=\"1\" colspan=\"1\"\u003e\n\u003cp class=\"qlbt-cell-line ql-align-center\" data-row=\"15\" data-cell=\"3\" data-rowspan=\"1\" data-colspan=\"1\"\u003e7g\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eSvbony 7nm Dual-Band Nebula Filter at selected size :\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1.25\"\u003c\/li\u003e\n\u003cli\u003e2\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eand 1x Plastic case\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20230306\/6381369398047470475187046.jpg?width=700\" alt=\"SV220 Dual-Band 7nm Nebula Filter\" height=\"399\" width=\"645\"\u003e\u003c\/p\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eSvbony 1-Year Warranty \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Svbony","offers":[{"title":"1.25\"","offer_id":52384150782172,"sku":"fvg1787937501790","price":59.38,"currency_code":"USD","in_stock":true},{"title":"2\"","offer_id":52384150814940,"sku":"xvg1787937501791","price":93.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/svbony-sv220-7nm-dual-band-nebula-filter-ha-oiii_1.jpg?v=1787937506"},{"product_id":"astronomik-h-alpha-6nm-ccd-filter","title":"Astronomik H-alpha 6nm CCD Filter","description":"\u003ch2\u003eAstronomik H-alpha 6nm CCD Filter\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe Astronomik H-alpha filter is ideal for imaging HII regions from both light-polluted and dark observation sites.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Astronomik H-alpha filter significantly enhances the contrast between objects emitting light at 656nm (H-alpha line) and the sky background, allowing for long exposure times for deep and high-contrast images.\u003c\/p\u003e\n\u003cp\u003eThe filter blocks the emission lines of high- and low-pressure sodium (Na)- and mercury (Hg)-vapor lamps, the maxima of typical LED lights, most lines of natural airglow, as well as most of the distracting moonlight.\u003c\/p\u003e\n\u003cp\u003eThe Astronomik H-alpha filter effectively blocks all unwanted light from wavelengths other than 656nm, from ultraviolet (UV) to infrared (IR).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #b13b3c;\"\u003eThe Astronomik H-alpha filter MUST NOT BE USED for solar observation!\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eDifference between Astronomik 12nm, 6nm and 4nm filters\u003c\/h2\u003e\n\u003cp\u003eThe choice between 12nm, 6nm and 4nm Full-Width-Half-Maximum (FWHM) filters depends on your imaging conditions and camera type. There is no universal “best” option - each FWHM serves a specific purpose.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003e6nm Astronomik Narrowband-Emissionline filters\u003c\/strong\u003e are usually the best choice for astrophotography. They are ideal for imaging faint objects in star-crowded regions of the milky way, as they typically halve the number of stars in the image compared to 12nm filters, greatly simplifying image processing.\u003c\/p\u003e\n\u003cp\u003eThe 6nm Narrowband-Emissionline filters are the first choice, especially if you are using a CMOS astro camera or a modern system camera with very low dark current, or if you are observing from a location with strong light pollution. The excellent suppression of the sky background allows you to use long exposure times. The 6nm filters provide a dark background and outstanding details of faint nebulae.\u003c\/p\u003e\n\u003ch2\u003eThe Astronomik MFR coating\u003c\/h2\u003e\n\u003cp\u003eBoth the Astronomik MFR and MaxFR coatings offer extremely high contrast, minimized stray light, no halos and needle-sharp stars. In addition, they provide the best possible blocking across the entire spectral range from UV to IR.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e6nm MFR-coated filters\u003c\/strong\u003e can be used in all instruments with aperture ratios from f\/4 to f\/15 without visible performance loss.\u003c\/p\u003e\n\u003ch2\u003eClip-Filters for mirrorless Canon EOS R APS-C cameras\u003c\/h2\u003e\n\u003cp\u003eCanon EOS R APS-C series cameras are an excellent choice for astrophotography. With Astronomik Clip-Filters, you can use our full range of filters with your camera to capture stunning images. Whether paired with a camera lens or a telescope, our clip filters ensure maximum image quality and performance from your setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Astronomik Clip-Filters offer a number of practical advantages that make them an ideal choice for astrophotographers:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalling and removing the Astronomik Clip-Filter is very quick and easy and requires no extra tools or modifications to the camera body. They can be changed at any time, even at night.\u003c\/li\u003e\n\u003cli\u003eAll lens functions, such as focus, aperture, and image stabilization remain fully functional.\u003c\/li\u003e\n\u003cli\u003eThe Astronomik Clip-Filters are held securely in place without stressing the high-quality glass.\u003c\/li\u003e\n\u003cli\u003eThe Astronomik Clip-Filters are designed and optimized for use with both standard camera lenses and telescopes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThrough the Astronomik Clip-Filters, we were able to solve several common issues faced by astrophotographers:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLarge filters for large camera lenses are very expensive.\u003c\/li\u003e\n\u003cli\u003eUsing a filter holder between the camera body and the lens prevents focusing to infinity.\u003c\/li\u003e\n\u003cli\u003eFor very fast telescopes (low f-number) like the Vixen R200SS or the Takahashi “Epsilon” astrograph, a filter drawer or filter wheel can not be used because the distance to the corrector lenses would be changed.\u003c\/li\u003e\n\u003cli\u003eLong exposure times lead to dust settling on the camera’s sensor chip.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditionally, all Astronomik EOS R APS-C Clip-Filters serve as an excellent dust shield, protecting the sensor during long exposures. If you only need a dust shield without filtering effects, the Astronomik MC-Clear EOS R APS-C Clip-Filter is the right choice.\u003c\/p\u003e\n\u003cp\u003eUse Astronomik filters for your Canon EOS R APS-C camera and enjoy marvelous images with an ultra-light equipment!\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #b13b3c;\"\u003eNOTE: Please store the Clip-Filter in the supplied storage box and do not leave it in the camera permanently.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eCompatible Canon EOS R APS-C cameras\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"text-align: center;\"\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R7\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 23px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R10\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 23px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R50\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 23px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R50 V\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 23px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R100\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 23px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eNon-compatible Canon lenses\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"text-align: center;\"\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 14mm f\/1.4 L VCM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 18px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 28mm F2.8 STM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 18px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 35mm F1.8 IS Macro STM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 18px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 85mm F1.2L USM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 18px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon Extender RF 2x\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 18px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon Extender RF 1.4x\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 18px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAstronomik filters are diffraction-limited, ensuring that the optical performance (resolution and contrast) of your telescope is not compromised. Thanks to the high-precision machining of the glas substrate, all Astronomik filters are parfocal. The wedge errors are far below all common tolerances. Therefore, all issues concerning focal distances and the exact alignment of images from each color channel are effectively eliminated.\u003c\/p\u003e\n\u003cp\u003eAll Astronomik filters are ideal for modern cameras, including both CMOS- and CCD-based models, ensuring you capture the best possible images with your equipment. Sharpness, contrast, and the absence of any reflections and halos are guaranteed. Even with bright stars in the field of view, nebulae and galaxies will be captured with the finest structures. The Astronomik MFR and MaxFR coatings are designed for optimal performance across a wide range of focal ratios of the optics used.\u003c\/p\u003e\n\u003cp\u003eEvery Astronomik filter undergoes a rigorous quality control process before delivery. Additionally, each Astronomik Narrowband-Emissionline filter is measured using a high-end PerkinElmer Spectrophotometer to ensure it meets the specifications published on our website. On the back of each Narrowband-Emissionline filter box, you will find a label detailing the precise spectral data for that specific filter, including the maximum transmission and the recommended range of focal ratios for best performance of that specific filter.\u003c\/p\u003e\n\u003ch3\u003e Technical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGuaranteed transmission of more than 90% at the H-alpha line (656nm)\u003c\/li\u003e\n\u003cli\u003eTypical transmission of 93% at the H-alpha line\u003c\/li\u003e\n\u003cli\u003eFull-Width-Half Maximum (FWHM): 6nm\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm (except Astronomik OWB Type 3 and XT filters)\u003c\/li\u003e\n\u003cli\u003eFinely polished optical glass, free of any striae, residual stresses, and bubbles\u003c\/li\u003e\n\u003cli\u003eExtremely scratch-resistant and durable coating\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity and aging effects\u003c\/li\u003e\n\u003cli\u003eAstronomik MFR coating (Astronomik Deep-Sky RGB, UV-IR Block L-1, L-2, L-3, and Narrowband-Emissionline filters)\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eDiffraction-limited\u003c\/li\u003e\n\u003cli\u003eOptimized spectral windows\u003c\/li\u003e\n\u003cli\u003eDelivered in a high-quality, long-lasting filter box\u003c\/li\u003e\n\u003cli\u003eMade in Germany\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 style=\"text-align: left;\"\u003e\u003cspan\u003eIn the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelected frame size of Astronomik H-alpha 6nm CCD Filter\u003c\/li\u003e\n\u003cli\u003ePlastic Storage Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 role=\"tabpanel\" aria-hidden=\"false\" aria-labelledby=\"tab-title-3\" data-content=\"tab-3\" class=\"tab__content tab.box tab__content--active\"\u003e\n\u003cspan\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003eAstronomik\u003cspan\u003e \u003c\/span\u003e10 year warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25\" (M28.5)","offer_id":52384150847708,"sku":"nwh1787937503432","price":131.21,"currency_code":"USD","in_stock":true},{"title":"2\" (M48)","offer_id":52384150880476,"sku":"kbw1787937503433","price":322.47,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS APS-C","offer_id":52384150913244,"sku":"nzi1787937503434","price":176.48,"currency_code":"USD","in_stock":true},{"title":"XT Clip-Filter EOS APS-C","offer_id":52384150946012,"sku":"edy1787937503435","price":243.83,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS R APS-C","offer_id":52384150978780,"sku":"dfs1787937503436","price":142.96,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS XL","offer_id":52384151011548,"sku":"xsa1787937503437","price":309.13,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS R XL","offer_id":52384151044316,"sku":"tph1787937503438","price":390.24,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS M","offer_id":52384151077084,"sku":"hly1787937503439","price":208.83,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Sony alpha 7","offer_id":52384151109852,"sku":"igm1787937503440","price":311.67,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon XL","offer_id":52384151142620,"sku":"qmt1787937503441","price":333.67,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon Z XL","offer_id":52384151175388,"sku":"tex1787937503442","price":369.43,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Pentax K-1","offer_id":52384151208156,"sku":"ypm1787937503443","price":348.39,"currency_code":"USD","in_stock":true},{"title":"T-Mount (M42x0.75)","offer_id":52384151240924,"sku":"ard1787937503444","price":259.3,"currency_code":"USD","in_stock":true},{"title":"31mm","offer_id":52384151273692,"sku":"dmp1787937503445","price":146.99,"currency_code":"USD","in_stock":true},{"title":"36mm","offer_id":52384151306460,"sku":"lhu1787937503446","price":197.07,"currency_code":"USD","in_stock":true},{"title":"50mm","offer_id":52384151339228,"sku":"qxu1787937503447","price":380.23,"currency_code":"USD","in_stock":true},{"title":"M49","offer_id":52384151371996,"sku":"pwt1787937503448","price":338.58,"currency_code":"USD","in_stock":true},{"title":"M52","offer_id":52384151404764,"sku":"rfu1787937503449","price":323.86,"currency_code":"USD","in_stock":true},{"title":"27mm unmounted","offer_id":52384151437532,"sku":"lkc1787937503450","price":123.38,"currency_code":"USD","in_stock":true},{"title":"42mm unmounted","offer_id":52384151470300,"sku":"lhr1787937503451","price":279.17,"currency_code":"USD","in_stock":true},{"title":"50 x 50mm² unmounted","offer_id":52384151503068,"sku":"jcf1787937503452","price":353.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/astronomik-h-alpha-6nm-ccd-filter_1.jpg?v=1787937508"},{"product_id":"svbony-sv199-adc-125-atmospheric-dispersion-corrector-w9157b","title":"SVBONY SV199 ADC 1.25\" Atmospheric Dispersion Corrector (W9157B)","description":"\u003ch1\u003eSVBONY SV199 ADC 1.25\" Atmospheric Dispersion Corrector\u003c\/h1\u003e\n\u003cdiv style=\"text-align: start;\" class=\"product-single__description rte\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFMC Prism Lens\u003c\/strong\u003e: The prism lens adopts double-sided coating technology to reduce light loss. And the coating adopts anti-reflection broadband, which is applicable from 300nm to 700nm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Blackened Anti-Reflective Treatment\u003c\/strong\u003e: The black anti-reflective coating inside the atmospheric dispersion corrector can effectively reduce light reflection and scattering, improving image clarity and contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Adaptation\u003c\/strong\u003e: The SV199 is equipped with a 1.25\" lens barrel with a T2 external thread. It can be connected to an eyepiece for visual observation, and can be combined with an astronomical camera for deep sky imaging. This adc meets the dual needs of astronomical observation and photography with a single device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBubble Centered Surface Level\u003c\/strong\u003e: The bubble level of the SV199 corrector ensures quick and accurate level positioning. The center of the bubble indicates the surface level.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg style=\"float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6387868175796344747593816.jpg?v=1750366628\u0026amp;width=700\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 16px;\"\u003eThe SV199 atmospheric dispersion corrector (ADC) uses FMC coating. It can minimize light scattering and ghosting artifacts while significantly enhancing image contrast. FMC coating not only has excellent scratch and abrasion resistance, but also effectively reduces chromatic aberration, ensuring perfect optical clarity and reliable performance under different environmental conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6387868178632312151917540.jpg?v=1750366661\u0026amp;width=700\"\u003e\u003c\/h3\u003e\n\u003ch2\u003e\u003cspan style=\"font-size: 16px; font-family: MiSans-Light;\"\u003eFeatures \u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003eThe ADC corrects the dispersive effects of earth´s atmosphere. You will get sharper images of planets and moon.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003eThrough the use of 2 high quality BK7 prisms, it corrects the false colour introduced by the earth´s atmosphere.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003eWhen used for planetary imaging, it changes the clarity of the image dramatically, particularly in the luminance channel when LRGB imaging.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003eAdaption is simple through T2 thread \u0026amp; 1.25\" barrel on camera side and 1.25\" barrel on telescope side.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 16px; font-family: MiSans-Light;\"\u003eThe bubble level of the SV199 atmospheric dispersion corrector ensures quick and accurate level positioning. The center of the bubble indicates surface level.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6387868180682643686727205.jpg?v=1750366681\u0026amp;width=700\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6387868182723448149560130.jpg?v=1750366699\u0026amp;width=700\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 16px; font-family: MiSans-Light;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eThe SV199 is equipped with a 1.25\" lens barrel with a T2 external thread. It can be connected to an eyepiece for visual observation, and can be combined with an astronomical camera for deep sky imaging. This adc meets the dual needs of astronomical observation and photography with a single device.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6387868138379665323782195.jpg?v=1750366724\u0026amp;width=700\"\u003e\u003c\/div\u003e\n\u003ch2\u003eHow to use SV199 atmospheric dispersion corrector\u003c\/h2\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6387868155226462117098321.jpg?v=1750366764\u0026amp;width=700\"\u003e\u003c\/div\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 996px; height: 1064px;\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 156pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eSVBONY\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 156pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eSV199\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 156pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eName\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eAtmospheric Dispersion Corrector\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 156pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eColor\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eBlack\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 156pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003ePrism type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eWedge\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 156pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eCoating process\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eDouble-sided antireflection\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 156pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eADC body interface\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e UV AR coating\/300-700nm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 156pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e1.25-inch T-port\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e 1.25-inch tube\/T2 male thread\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 156pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e1.25-inch eyepiece mount\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e T2 female thread (lower end)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 156pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eADC body interface\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eT2 male thread\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 156pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eBubble level\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54pt; height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e Yes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eSurface accuracy\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e1λ\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eADC body length\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e30x48mm\/1.18x1.89\" (subject to sample)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eEffective aperture\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e 24mm\/0.94\"\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eMain body processing technology\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eCNC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eOptical structure\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e One pair of wedge-shaped types\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eThread tolerance range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e0.05mm\/0.0019\"\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003ePrism edge technology\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eMatte ink coating\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eEyepiece end locking method\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eSide locking screws\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: 16px;\"\u003eAdjustment rod method\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: 16px;\"\u003e Plastic adjustment lever\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: 16px;\"\u003eScale dial\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: 16px;\"\u003eMetal\/black\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: 16px;\"\u003eLocking screw\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: 16px;\"\u003eMetal\/bright silver\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: 16px;\"\u003eAccessories\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: 16px;\"\u003eDust cover one pair\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eOptical aperture\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e24mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"height: 38px;\"\u003e\u003cspan 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38px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e137x105x97mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSVBONY ADC (W9157B)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eSvbony 1-Year Warranty \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":52384151535836,"sku":"fbj1787937505198","price":62.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/svbony-sv199-adc-125-atmospheric-dispersion-corrector-w9157b_1.jpg?v=1787937509"},{"product_id":"orion-skyglow-125-filter-05559","title":"Orion SkyGlow 1.25\" Filter (05559)","description":"\u003ch2\u003eOrion SkyGlow 1.25\" Filter \u003c\/h2\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSpecialized astrophotography filter designed for deep-sky imaging in light polluted skies with CCD or DSLR cameras\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eThe SkyGlow Imaging filter suppresses up to 99% transmission of specific light wavelengths responsible for light pollution\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eEnhances contrast of all types of deep-sky objects: galaxies, nebulas, and star clusters\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eFilter with metal filter cell construction preserves neutral color balance, eliminating need for corrective color processing later\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eEnables longer astrophotographic exposure times without background saturation due to sky glow\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIntroducing a must-have telescope filter for any astrophotographer that doesn?t happen to live on Mauna Kea. With the Orion SkyGlow Astrophotography Filter you can take incredible deep-sky images under light-polluted skies with your CCD or DSLR camera. That?s because Orion custom designed the filter to selectively block the specific wavelengths of light associated with urban sky glow, letting the light emitted from deep-sky objects shine through. You?ll see a marked increase in image contrast for all types of deep sky objects, even faint galaxies, which typically are suppressed through visual light pollution filters.\u003c\/p\u003e\n\u003cp\u003eBy blocking up to 99% transmission of the offending wavelengths, the Orion SkyGlow Astrophotography Telescope Filter enables longer exposure times without background saturation. Because the white light spectrum remains largely intact, the color balance of the image is not affected, eliminating the need for corrective processing later.\u003c\/p\u003e\n\u003cp\u003eThe improvement in contrast achieved with the Orion SkyGlow Astrophotography Filter is remarkable. Just look at the filtered and unfiltered actual image examples below:\u003c\/p\u003e\n\u003cp\u003e\u003cimg width=\"245\" height=\"475\" src=\"https:\/\/www.telescope.com\/assets\/product_files\/images\/M42_SkyGlow_Comparison.gif\" alt=\"Orion SkyGlow Astrophotography Telescope Filter Comparison\" data-mce-src=\"https:\/\/www.telescope.com\/assets\/product_files\/images\/M42_SkyGlow_Comparison.gif?width=700\"\u003e\u003c\/p\u003e\n\u003cp\u003eWith this telescope filter you can take long-exposure photographs of faint galaxies, nebulas, and star clusters from a light-polluted city, or from a suburban backyard brightened by a nearby street lamp. Your images will turn out better than you ever thought possible.\u003c\/p\u003e\n\u003cp\u003eThe Orion SkyGlow Astrophotography Filter has a threaded aluminum cell and is available in 1.25\" and 2\" sizes. This 1.25\" filter threads into the nosepiece of our StarShoot CCD and similar cameras. The 2\" filter fits Orion 2\" accessories, including the 2\" Zero-Profile camera Adapter that couples a DSLR camera body with T-ring to a 2\" focuser.\u003c\/p\u003e\n\u003cp\u003eDon't let light pollution spoil your deep-sky images! Get an Orion SkyGlow Astrophotography Filter today and enjoy vivid, high-contrast astrophotos from anywhere!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eOrion 1.25\" SkyGlow Astrophotography Filter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFilter case\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eOrion 1-year warranty \u003c\/p\u003e","brand":"Orion","offers":[{"title":"Default Title","offer_id":52384151568604,"sku":"dzt1787937506978","price":65.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/orion-skyglow-125-filter-05559_1.png?v=1787937512"},{"product_id":"astronomik-proplanet-742-ir-pass-filter","title":"Astronomik ProPlanet 742 IR-pass filter","description":"\u003ch2 data-mce-fragment=\"1\"\u003eAstronomik ProPlanet 742 IR-pass filter\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal filters for the reception of the moon and planets, notably Mars, with telescopes from 6\" (150mm) aperture.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe ProPlanet IR 742 only allows infrared light with wavelengths of more than 742 nm to pass. In this wavelength range the effects of seeing are significantly lower than in the visible spectrum of the human eye. This allows much sharper images than are usually obtained from your device and location. Another advantage is that the sky background of advanced dawn is dark and so the filter even allows photography of the planets and the moon at daylight.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\u003cp\u003eThe Astronomik ProPlanet IR 742 cuts off the visible part of the spectrum and allows the light of wavelengths longer then 742nm to pass. Due to this behavior the part of the spectrum that is most sensitive to bad seeing is rejected. This approach does a big improvement to the imaging of planets and the moon. The image is more steady than the image in the visible light with nearly identical exposure times.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"Jupiter, aufgenommen mit L-RGB Filtern und Astrnomik ProPlanet 742\" height=\"263\" src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/Astronomik_ProPlanet742_vs_LRGB_Jupiter.png\" title=\"Jupiter, aufgenommen mit L-RGB Filtern und Astrnomik ProPlanet 742 (Alexei Pace, Malta)\" width=\"500\" data-mce-src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/Astronomik_ProPlanet742_vs_LRGB_Jupiter.png?width=700\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eJupiter, imaged with L-RGB Filtern (left) and Astronomik ProPlanet 742 (right)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg alt=\"Comparing sharpness in IR-R-G-B at Saturn\" src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/Vergleich_RGB-vs-IR-Pass_filter.png\" title=\"Comparing sharpness in IR-R-G-B at Saturn\" data-mce-src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/Vergleich_RGB-vs-IR-Pass_filter.png?width=700\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eComparing sharpness in IR-R-G-B at Saturn\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg alt=\"Comparing L-RGB versus IR-RGB at Saturn\" src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/Vergleich_L-RGB-vs-IR-RGB.png\" title=\"Comparing L-RGB versus IR-RGB at Saturn\" data-mce-src=\"https:\/\/www.astronomik.com\/media\/wysiwyg\/Vergleich_L-RGB-vs-IR-RGB.png?width=700\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eComparing L-RGB versus IR-RGB at Saturn\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003eOther uses\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eBesides astrophotography the filter allows you to get stunning results in nature photography. If an EOS-Clip Filter is used in an MC modified DSLR you get tremendous results imaging the flora. The filter cuts off the part of the spectrum where Chlorophyll looks green and shows its high reflectivety in the near infrared. If trees are photographed in spring and summer under blue skies you get stunning images with white trees and clouds in front of a near black background.\u003c\/li\u003e\n\u003cli\u003eDarkens the background during twilight.\u003c\/li\u003e\n\u003cli\u003eImaging of bright planets, stars and comets by day.\u003c\/li\u003e\n\u003cli\u003eImaging of young stars in dust clouds and stellar nurseries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003c\/h4\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eAlternatives\u003c\/h4\u003e\n\u003cp\u003eWhen the seeing is very bad and the instrument is 10\" (250 mm) or larger, the Astronomik ProPlanet IR 807 may be the better choice.\u003c\/p\u003e\n\u003cp\u003emore information about the photographic Astronomik filters\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/produktabbildungen\/astronomik\/transmission\/full\/astronomik-proplanet-742_trans.png\" alt=\"Transmissionsgraphik\" data-mce-src=\"https:\/\/www.astronomik.com\/media\/produktabbildungen\/astronomik\/transmission\/full\/astronomik-proplanet-742_trans.png?width=700\"\u003e\u003c\/p\u003e\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Unsuitable, the eye is insensitive at this spectrum\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Unsuitable, the eye is insensitive at this spectrum\u003c\/li\u003e\n\u003cli\u003eFilm photography: It depends,\u003c\/li\u003e\n\u003cli\u003eCCD photography: Reasonable, for special IR photography (as chlorophyll)\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Unsuitable\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Unsuitable\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Very good, for IR daylight photography\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Very good, rejects problems with seeing\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Very good, rejects problems with seeing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003emore then 96% transmission for wavelengths of 742nm to 1100nm\u003c\/li\u003e\n\u003cli\u003eblocking of wavelengths between 350nm and 730nm\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\u003cli\u003eSince 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSelected frame size of Astronomik ProPlanet 742 IR-pass filter\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePlastic Storage Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"tab__content tab.box tab__content--active\" data-content=\"tab-3\" aria-labelledby=\"tab-title-3\" aria-hidden=\"false\" role=\"tabpanel\" data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAstronomik\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e10 year warranty\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25\" 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unmounted","offer_id":52384152453340,"sku":"lac1787937497040","price":35.23,"currency_code":"USD","in_stock":true},{"title":"42mm unmounted","offer_id":52384152486108,"sku":"taz1787937497041","price":60.88,"currency_code":"USD","in_stock":true},{"title":"50 x 50mm² unmounted","offer_id":52384152518876,"sku":"zts1787937497042","price":74.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/astronomik-proplanet-742-ir-pass-filter_1.jpg?v=1787937526"},{"product_id":"baader-acf-2-dslr-astro-conversion-filter-canon-eos-350d20d10d30d-facf-2","title":"Baader ACF 2 DSLR Astro Conversion Filter Canon EOS 350D\/20D\/10D\/30D (FACF-2)","description":"\u003ch1\u003eBaader ACF 2 DSLR Astro Conversion Filter Canon EOS 350D\/20D\/10D\/30D\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDSLR Conversion Filter for\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eCanon EOS 350D\/20D\/10D\/30D. \u003cem\u003e\u003cspan\u003e \u003c\/span\u003eLimited Stock\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eTurn your Canon DSLR into a superb deep sky AstroCamera. Baader's DSLR conversion filters replace the factory correcting filter (\"hot mirror\"). The special substrate is coated with Baader's renowned coatings. Imagers can now gain full efficiency at H-Alpha wavelengths, and at full resolution (the Baader filter eliminates the Canon factory moire filter, which reduces resolution on astronomical subjects). The thickness of the Baader DSLR filters have been designed to maintain the correct factory focal point (please note: The Baader filter is intentionally of a different thickness than the factory filter - this is required to match the effective index of refraction of the factory 'sandwich' filter).\u003c\/p\u003e\n\u003cp\u003eThe Baader DSLR Conversion Filters are produced to the same specifications and by the same processes used for all of their other premium Baader Astronomical Filters. Each filter is optically polished to 1\/4 wave and most importantly the ionbeam hardened coatings are applied AFTER cutting and polishing. This important aspect guarantees that your coatings will not peel or degrade due to the softer coatings and edge damage caused by post-cutting operations used by some other filters to cut costs. With a Baader filter, you never need to worry that your internal DSLR Conversion filter will fail prematurely.\u003c\/p\u003e\n\u003cp\u003eThis filter is intended for amateurs that are comfortable replacing their camera's stock filter. Please Note: For best performance we recommend installing the filter with the coated (pinkish) side facing out (FACF-1, II, III). The FBCF-400D is clear with no pinkish side and does not require any particular orientation. The digital astro eGroup is a great place for advice on how to replace this filter.\u003c\/p\u003e\n\u003cp\u003eHere is a link to a very well done filter replacement tutorial:\u003cspan\u003e \u003c\/span\u003ehttp:\/\/www.lifepixel.com\/ir-tutorials\/canon-rebel-xt-300d-digital-infrared-conversion-instructions.htm\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHere's a very nice YouTube video done by Gary Honis on retrofitting a Canon 450D with the FBCF-400D: \u003c\/span\u003ehttp:\/\/www.youtube.com\/watch?v=-IIN0-q2WLY\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable class=\"data-table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"first odd\"\u003e\n\u003cth class=\"label\"\u003eMANUFACTURER\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth class=\"label\"\u003eSKU (#)\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003e2459212\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth class=\"label\"\u003eEAN CODE\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003e4047825008978\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth class=\"label\"\u003eWEIGHT (KG)\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003e0.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth class=\"label\"\u003eTRANSMISSION RANGE\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003e400 – 700 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth class=\"label\"\u003eAR-COATING\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003edielectrically coated, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth class=\"label\"\u003eFILTER SIZE\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003eother\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth class=\"label\"\u003eFILTER USAGE\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003eColor Correction, H-alpha, IR-Cut, UV-Cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth class=\"label\"\u003eFILTER MOUNTED\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003eUnmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth class=\"label\"\u003eSINGLE OR SET?\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"last odd\"\u003e\n\u003cth class=\"label\"\u003eFILTER SHAPE\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003erectangular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eBaader ACF 2 DSLR Astro Conversion Filter Canon EOS 350D\/20D\/10D\/30D\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty \u003c\/h3\u003e\n\u003cp\u003eBaader 2 year warranty : Returns and Warranty Policies — Alpine Astronomical LLC\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":52384155042012,"sku":"hrz1787937783686","price":75.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/baader-acf-2-dslr-astro-conversion-filter-canon-eos-350d20d10d30d-facf-2_1.png?v=1787937790"},{"product_id":"baader-c2-swan-band-filter-15nm-oiii-parallel-fswan","title":"Baader C2 Swan-Band Filter (15nm) – OIII Parallel (FSWAN)","description":"\u003ch1\u003eBaader C2 Swan-Band Filter (15nm) – OIII Parallel\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComet filter for the two brightest C2 emission lines at 511 and 514nm (called \"Swan-Band\") in the gas tail and gasplume of comets, respectively\u003c\/li\u003e\n\u003cli\u003eBlocks the adjacent OIII line, which does not predominantly occur in the tail of comets\u003c\/li\u003e\n\u003cli\u003eCMOS optimized for increased contrast\u003c\/li\u003e\n\u003cli\u003eFront-Reflex-Blocker™ hard coated and planeoptically polished – with sealed coating edges (Life-Coat™)\u003c\/li\u003e\n\u003cli\u003eBlackened edges all around\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003cp\u003eThe SwanBand filter is indeed a very special filter with central wavelength at 512 nm and ≤15nm half-width -\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003efor the first time without any O III transmission.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIt is therefore suitable for a variety of unusual applications some of which require further investigation, whether as an \"O III parallel filter\" to better remove stars from the image, or as a solar filter in a previously inaccessible section of the spectrum. We would be pleased about your experience reports also apart from the comet photography.\u003c\/p\u003e\n\u003ch2\u003eContrast gain for comet hunters\u003c\/h2\u003e\n\u003cp\u003eThe Baader C2 SWAN-Band-Filter with ≤ 15 nm Half-Band-Width isolates the two C2 lines at 511 and 514nm.\u003c\/p\u003e\n\u003cp\u003eThese two emission lines, named Swan bands after their discoverer, dominate the spectrum of a comet's gas tail in the visible range. The filter allows only the light from the two carbon bands to pass through and, among other things, blocks the ubiquitous stray light, similar to a nebula filter in deep-sky observation. Structures in the gas tail thus become clearer even under good observing conditions. At the same time, it completely blocks the OIII line at 501nm and below, which other Swan-Band filters allow to pass. This allows for even higher contrast, and comets with gas tails can be distinguished even better from those dominated by a dust tail (and where a SWAN filter provides only a small contrast enhancement). For ambitious comet observers, a SWAN filter is part of the basic equipment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Baader SWAN-Filter has got all the advantages of the CMOS-optimized Baader filters:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCMOS-Optimized Baader Filter\u003c\/li\u003e\n\u003cli\u003eIncreased contrast\u003c\/li\u003e\n\u003cli\u003eEver more narrow passbands\u003c\/li\u003e\n\u003cli\u003eReflex-Blocker™ coatings, for largest ever freedom from halos, even under most adverse conditions concerning aux-optics\u003c\/li\u003e\n\u003cli\u003eFWHM on each filter category carefully designed to allow for 1:1:1 exposures, matched for typical CMOS quantum efficiency and s\/n ratio\u003c\/li\u003e\n\u003cli\u003eIdentical filter thickness to existing standards, with utmost care for parfocality\u003c\/li\u003e\n\u003cli\u003eBlackened edges all around, with filter-lead-side-indicator in the form of a black frontside outer rim, to additionally eliminate any reflection due to light falling onto the edge of a filter\u003c\/li\u003e\n\u003cli\u003eEach filter coated individually, with sealed coating edge (NOT cut out of a larger plate with coatings left exposed read more)\u003c\/li\u003e\n\u003cli\u003eLife-Coat™: evermore hard coatings to enable a non-aging coating for life – even in a most adverse environment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ch2\u003e1.25\"\u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"data-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eMANUFACTURER\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eSKU (#)\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2961860\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eEAN CODE\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e4047825054128\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eNET WEIGHT (KG)\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0,006\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eTRANSMISSION RANGE\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e≤ 505 – 520 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eFILTER THICKNESS (WITHOUT CELL)\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eHBW (HALFBANDWIDTH)\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e≤ 15nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eCWL (CENTRAL WAVELENGTH)\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e513 nm (for the C2 lines at 511 and 514nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eAR-COATING\u003c\/th\u003e\n\u003ctd class=\"data\"\u003edielectrically coated, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eFILTER SIZE\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 25 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eFILTER USAGE\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGas evolution of comets, O-III-paralel Imaging, Contrast Enhancement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eFILTER MOUNTED\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eMounted (LPFC 6mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eTYPE OF FILTER\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eBandpass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eSINGLE OR SET?\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eFILTER SHAPE\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003ch2\u003e2\"\u003c\/h2\u003e\n\u003ctable class=\"data-table\" id=\"product-attribute-specs-table\" data-mce-fragment=\"1\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eMANUFACTURER\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eSKU (#)\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003e2961863\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eEAN CODE\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003e4047825054135\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eNET WEIGHT (KG)\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003e0.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eTRANSMISSION RANGE\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003e≤ 505 – 520 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eFILTER THICKNESS (WITHOUT CELL)\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eHBW (HALFBANDWIDTH)\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003e≤ 15nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eCWL (CENTRAL WAVELENGTH)\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003e513 nm (for the C2 lines at 511 and 514nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eAR-COATING\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003edielectrically coated, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eFILTER SIZE\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003e2 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eFILTER USAGE\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eGas evolution of comets, O-III-paralel Imaging, Contrast Enhancement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eFILTER MOUNTED\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eMounted (LPFC 6mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eTYPE OF FILTER\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eBandpass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eSINGLE OR SET?\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eFILTER SHAPE\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003eBaader 2 year warranty : Returns and Warranty Policies — Alpine Astronomical LLC\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLimited-Lifetime-Warranty for CMOS-optimized Baader filters\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA Baader Planetarium exclusive. Filters incorporating Baader Planetarium’s Life-Coat™ technology are so durable that Baader Planetarium warrants the coatings for the life of the filter. Baader Planetarium has developed Life-Coat™ using materials and processes that result in coatings which will not degrade or fail for a lifetime. Life-Coat™ coatings resist moisture, temperature extremes, and are hardened to withstand normal cleanings.\u003c\/p\u003e\n\u003cp\u003eBaader Planetarium guarantees their Life-Coat™ coatings will not peel, flake or physically degrade and will withstand repeated cleaning with fine optical cleaning equipment. The Limited Lifetime Warranty applies to the original purchaser and does not cover failure from misuse, physical damage through improper handling, or improper clea\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25 inch","offer_id":52384155074780,"sku":"yvu1787937784162","price":61.2,"currency_code":"USD","in_stock":true},{"title":"2 inch","offer_id":52384155107548,"sku":"dwq1787937784163","price":112.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/baader-c2-swan-band-filter-15nm-oiii-parallel-fswan_1.webp?v=1787937790"},{"product_id":"baader-bcf-1-dslr-astro-conversion-filter-for-canon-aps-c-cameras-all-latest-models-fbcf-400d","title":"Baader BCF 1 - DSLR Astro Conversion Filter for Canon APS-C Cameras (all latest models) (FBCF-400D)","description":"\u003ch1\u003eBaader BCF 1 - DSLR Astro Conversion Filter for Canon APS-C Cameras (all latest models)\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDSLR Conversion Filter for\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eCanon APS-C cameras (all latest models, as well as older EOS 7D\/40D\/50D\/60D\/400D\/450D\/500D\/550D\/600D\/650D\/1000D\/1100D\/Rebel XS\/T1i\/T2i\/T3\/T3K,T4i)\u003c\/p\u003e\n\u003cp\u003eTurn your Canon DSLR into a superb deep sky AstroCamera. Baader's DSLR conversion filters replace the factory correcting filter (\"hot mirror\"). The special substrate is coated with Baader's renowned coatings. Imagers can now gain full efficiency at H-Alpha wavelengths, and at full resolution (the Baader filter eliminates the Canon factory moire filter, which reduces resolution on astronomical subjects). The thickness of the Baader DSLR filters have been designed to maintain the correct factory focal point (please note: The Baader filter is intentionally of a different thickness than the factory filter - this is required to match the effective index of refraction of the factory 'sandwich' filter).\u003c\/p\u003e\n\u003cp\u003eThe Baader DSLR Conversion Filters are produced to the same specifications and by the same processes used for all of their other premium Baader Astronomical Filters. Each filter is optically polished to 1\/4 wave and most importantly the ionbeam hardened coatings are applied AFTER cutting and polishing. This important aspect guarantees that your coatings will not peel or degrade due to the softer coatings and edge damage caused by post-cutting operations used by some other filters to cut costs. With a Baader filter, you never need to worry that your internal DSLR Conversion filter will fail prematurely.\u003c\/p\u003e\n\u003cp\u003eThis filter is intended for amateurs that are comfortable replacing their camera's stock filter. Please Note: For best performance we recommend installing the filter with the coated (pinkish) side facing out (FACF-1, II, III). The FBCF-400D is clear with no pinkish side and does not require any particular orientation. The digital astro eGroup is a great place for advice on how to replace this filter.\u003c\/p\u003e\n\u003cp\u003eHere is a link to a very well done filter replacement tutorial:\u003cspan\u003e \u003c\/span\u003ehttp:\/\/www.lifepixel.com\/ir-tutorials\/canon-rebel-xt-300d-digital-infrared-conversion-instructions.htm\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHere's a very nice YouTube video done by Gary Honis on retrofitting a Canon 450D with the FBCF-400D: \u003c\/span\u003ehttp:\/\/www.youtube.com\/watch?v=-IIN0-q2WLY\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable class=\"data-table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"first odd\"\u003e\n\u003cth class=\"label\"\u003eMANUFACTURER\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth class=\"label\"\u003eSKU (#)\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003e2459213\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth class=\"label\"\u003eEAN CODE\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003e4047825019721\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth class=\"label\"\u003eWEIGHT (KG)\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003e0.044\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth class=\"label\"\u003eTRANSMISSION RANGE\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003e400 – 700 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth class=\"label\"\u003eAR-COATING\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003edielectrically coated, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth class=\"label\"\u003eFILTER SIZE\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003eother\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth class=\"label\"\u003eFILTER USAGE\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003eColor Correction, H-alpha, IR-Cut, UV-Cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth class=\"label\"\u003eFILTER MOUNTED\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003eUnmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth class=\"label\"\u003eSINGLE OR SET?\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"last odd\"\u003e\n\u003cth class=\"label\"\u003eFILTER SHAPE\u003c\/th\u003e\n\u003ctd class=\"data last\"\u003erectangular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eBaader BCF 1 - DSLR Astro Conversion Filter\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003eBaader 2 year warranty : Returns and Warranty Policies — Alpine Astronomical LLC\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":52384155140316,"sku":"yrm1787937784702","price":61.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/baader-bcf-1---dslr-astro-conversion-filter-for-canon-aps-c-cameras-all-latest-m_1.webp?v=1787937790"},{"product_id":"baader-sloansdss-filters-photometric-fsln","title":"Baader SLOAN\/SDSS Filters – Photometric (FSLN)","description":"\u003ch1\u003eBaader SLOAN\/SDSS Filters – Photometric\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBaader SLOAN-ugriz' Bandpass Filter Set, suitable from f\/15 to f\/1.8\u003c\/li\u003e\n\u003cli\u003eSLOAN\/SDSS (ugriz’) photometric filters with transmission according to SLOAN-specification\u003c\/li\u003e\n\u003cli\u003eManufactured with most advanced ion beam coating technology \/ Daylight-Proof\u003c\/li\u003e\n\u003cli\u003eReflex-Blocker™ hard coated and planeoptically polished – with sealed coating edges (Life-Coat™)\u003c\/li\u003e\n\u003cli\u003eBlackened edges all around, with filter-lead-side-indicator in the form of a telescope-sided black outer rim\u003c\/li\u003e\n\u003cli\u003eEqually suitable for modern CMOS cameras as well as for older CCD camera technologies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe new generation of Baader CMOS-optimized filters features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReflex-Blocker™ coatings, for largest ever freedom from halos, even under most adverse conditions concerning aux-optics\u003c\/li\u003e\n\u003cli\u003eIdentical filter thickness to existing standards, with utmost care for parfocality\u003c\/li\u003e\n\u003cli\u003eBlackened edges all around, with filter-lead-side-indicator in the form of a black frontside outer rim, to additionally eliminate any reflection due to light falling onto the edge of a filter\u003c\/li\u003e\n\u003cli\u003eEach filter coated individually, with sealed coating edge (NOT cut out of a larger plate with coatings left exposed read more)\u003c\/li\u003e\n\u003cli\u003eLife-Coat™: evermore hard coatings to enable a non-aging coating for life – even in a most adverse environment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"data-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eMANUFACTURER\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eCOLOUR\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eTRANSMISSION RANGE\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\u003cspan\u003eTransmission according to SLOAN-Specification\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eFILTER THICKNESS (WITHOUT CELL)\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003cul\u003e\n\u003cli\u003e1.25\/2\/36\/47.4: 2mm Thick\u003c\/li\u003e\n\u003cli\u003e50.4\/50x50\/65x65: 3mm Thick\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eCWL (CENTRAL WAVELENGTH)\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\u003cspan\u003eSLOAN\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eAR-COATING\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eReflex-Blocker™ hard coated, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eSPECIAL FEATURES\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eLife-Coat™\u003cspan\u003e \u003c\/span\u003eWarranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eFILTER SIZE\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 25 inch, 2 inch, 36 mm, 50.4 mm, 50 x 50 mm, 65 x 65 mm, 100 x 100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eFILTER USAGE\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\u003cspan\u003eSLOAN, CMOS, CCD\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eFILTER MOUNTED\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eMounted (LPFC 6mm) \/ Unmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eTYPE OF FILTER\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eBandpass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eSINGLE OR SET?\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eSingle and Filterset\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eFILTER SHAPE\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eround or square\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003eBaader 2 year warranty : Returns and Warranty Policies — Alpine Astronomical LLC\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLimited-Lifetime-Warranty for CMOS-optimized Baader filters\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA Baader Planetarium exclusive. Filters incorporating Baader Planetarium’s Life-Coat™ technology are so durable that Baader Planetarium warrants the coatings for the life of the filter. Baader Planetarium has developed Life-Coat™ using materials and processes that result in coatings which will not degrade or fail for a lifetime. Life-Coat™ coatings resist moisture, temperature extremes, and are hardened to withstand normal cleanings.\u003c\/p\u003e\n\u003cp\u003eBaader Planetarium guarantees their Life-Coat™ coatings will not peel, flake or physically degrade and will withstand repeated cleaning with fine optical cleaning equipment. The Limited Lifetime Warranty applies to the original purchaser and does not cover failure from mis-use, physical damage through improper handling, or improper cleaning.\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"u' \/ 1.25 inch","offer_id":52384155173084,"sku":"mck1787937783775","price":97.56,"currency_code":"USD","in_stock":true},{"title":"u' \/ 2 inch","offer_id":52384155205852,"sku":"wbp1787937783776","price":192.52,"currency_code":"USD","in_stock":true},{"title":"u' \/ 36 mm","offer_id":52384155238620,"sku":"upg1787937783777","price":167.41,"currency_code":"USD","in_stock":true},{"title":"u' \/ 50.4 mm","offer_id":52384155271388,"sku":"ywq1787937783778","price":204.89,"currency_code":"USD","in_stock":true},{"title":"u' \/ 50 x 50 mm","offer_id":52384155304156,"sku":"zyc1787937783779","price":231.2,"currency_code":"USD","in_stock":true},{"title":"u' \/ 65 x 65 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mm","offer_id":52384156483804,"sku":"fzf1787937783815","price":296.81,"currency_code":"USD","in_stock":true},{"title":"y' \/ 100 x 100 mm","offer_id":52384156516572,"sku":"qfr1787937783816","price":492.42,"currency_code":"USD","in_stock":true},{"title":"Filterset \/ 1.25 inch","offer_id":52384156549340,"sku":"unl1787937783817","price":552.32,"currency_code":"USD","in_stock":true},{"title":"Filterset \/ 2 inch","offer_id":52384156582108,"sku":"fhh1787937783818","price":983.81,"currency_code":"USD","in_stock":true},{"title":"Filterset \/ 36 mm","offer_id":52384156614876,"sku":"gqh1787937783819","price":883.97,"currency_code":"USD","in_stock":true},{"title":"Filterset \/ 50.4 mm","offer_id":52384156647644,"sku":"yac1787937783820","price":1285.06,"currency_code":"USD","in_stock":true},{"title":"Filterset \/ 50 x 50 mm","offer_id":52384156680412,"sku":"kbz1787937783821","price":1265.47,"currency_code":"USD","in_stock":true},{"title":"Filterset \/ 65 x 65 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While regular G-filters suffer from bad seeing due to air turbulences, the narrow range of 9 nm passes less thermal noise, i.e. sharper images. Nevertheless, the transmission window is large enough not to be considered a pure narrowband filter.\u003c\/li\u003e\n\u003cli\u003eCMOS-optimized coating technology with much steeper slopes of the filter passband - for increased contrast, longer life and to avoid reflections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBaader O-III Super-G Filter, 1¼\" and 2\"\u003c\/h2\u003e\n\u003cp\u003eThe new Baader O-III filter is designed for deep sky visual observing and photographing those gas nebulae in which doubly ionized oxygen fluoresces.  It is superb for for planetary nebulae, supernova remnants, and many large emission nebula.  With a FWHM of only 9 nm and equipped with the CMOS-optimized coating technology, it darkens the sky background, blocking stray light much better than its 10 nm predecessor (Baader (10nm) O-III Filter  visual) for outstanding visual contrast on a large number of nebula.  But the narrower FWHM is not the most important improvement. More important is the significantly better blocking aside of the O-III wavelength, as well as even steeper transmission slopes and a broad plateau in the transmission range. With a transmission of 97% for the emission line at 500.7 nm, practically all the light of the nebula passes through the filter. At the same time, this filter can be used photographically for practically any focal ratio from f\/1.8 to f\/12 without passing any light of the H-beta line. This makes the Super-G filter just as ideal for use in areas with high light pollution.\u003c\/p\u003e\n\u003ch2\u003ePhotographic use\u003c\/h2\u003e\n\u003cp\u003eThe 9 nm O-III filter can be excellently used photographically on all telescopes, especially with a DSLR or an astronomical OSC colour camera. It offers all the advantages of the CMOS-optimized Baader filters such as Reflex-Blocker™ coating against reflections, plano-optical polishing and age-resistant Life-Coat™ coating. For monochrome cameras, we recommend the even stronger Narrowband (6,5 nm) and Ultra-Narrowband (4 nm) filters , which are available specially adapted for different aperture ratios. For this comparatively broadband 9 nm filter, pre-shifting is not necessary at focal ratios faster than f\/4, thus it can be used at all focal ratios.\u003c\/p\u003e\n\u003ch2\u003eSuper-G filter\u003c\/h2\u003e\n\u003cp\u003eThe filter has the same thickness as the 1.25\"\/2\" Baader LRGB filters. This makes it suitable for use as a \"super G filter\": In the transmission range of the normal green filter (490-580nm) there are no emission lines other than OIII; H-Beta at 486 nm is already covered by the RGB blue filter. So, when using the 9 nm O-III filter instead of the standard RGB green filter, emission nebulae are consequently emphasised much more strongly, while the stars appear fainter.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eThe Baader O-III Super-G Filter (9nm) also offers all the advantages of the CMOS-optimized Baader filters:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIncreased contrast, matched for typical CMOS quantum efficiency and s\/n ratio\u003c\/li\u003e\n\u003cli\u003eReflex-Blocker™ coatings, for largest ever freedom from halos, even under most adverse conditions concerning aux-optics\u003c\/li\u003e\n\u003cli\u003eIdentical filter thickness to existing standards, with utmost care for parfocality\u003c\/li\u003e\n\u003cli\u003eBlackened edges all around, with filter-lead-side-indicator in the form of a black frontside outer rim, to additionally eliminate any reflection due to light falling onto the edge of a filter\u003c\/li\u003e\n\u003cli\u003eEach filter coated individually, with sealed coating edge (NOT cut out of a larger plate with coatings left exposed, read more)\u003c\/li\u003e\n\u003cli\u003eLife-Coat™: evermore hard coatings to enable a non-aging coating for life – even in a most adverse environment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ch2\u003e1.25\"\u003c\/h2\u003e\n\u003ctable data-mce-fragment=\"1\" class=\"data-table\" id=\"product-attribute-specs-table\"\u003e\n\u003ccolgroup data-mce-fragment=\"1\"\u003e \u003ccol data-mce-fragment=\"1\" width=\"25%\"\u003e \u003ccol data-mce-fragment=\"1\"\u003e \u003c\/colgroup\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eMANUFACTURER\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eSKU (#)\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003e2961550\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eEAN CODE\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003e4047825048172\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eNET WEIGHT (KG)\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003e0.06\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eTRANSMISSION RANGE\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003eO-III\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eFILTER THICKNESS (WITHOUT CELL)\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eHBW (HALFBANDWIDTH)\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003e9nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eCWL (CENTRAL WAVELENGTH)\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003e502 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eAR-COATING\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003eReflex-Blocker™ hard coated, dielectrically coated, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eFILTER SIZE\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003e1 25 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eFILTER USAGE\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003eCMOS, Contrast Enhancement, O-III, Planetary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eFILTER MOUNTED\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003eMounted (LPFC 6mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eTYPE OF FILTER\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003eNarrowband\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eSINGLE OR SET?\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eFILTER SHAPE\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003eround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e2\"\u003c\/h2\u003e\n\u003ctable data-mce-fragment=\"1\" class=\"data-table\" id=\"product-attribute-specs-table\"\u003e\n\u003ccolgroup data-mce-fragment=\"1\"\u003e \u003ccol data-mce-fragment=\"1\" width=\"25%\"\u003e \u003ccol data-mce-fragment=\"1\"\u003e \u003c\/colgroup\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eMANUFACTURER\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eSKU (#)\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003e2961551\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eEAN CODE\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003e4047825048189\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eNET WEIGHT (KG)\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003e0.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eTRANSMISSION RANGE\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003eO-III\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eFILTER THICKNESS (WITHOUT CELL)\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eHBW (HALFBANDWIDTH)\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003e9nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eCWL (CENTRAL WAVELENGTH)\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003e502 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eAR-COATING\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003eReflex-Blocker™ hard coated, dielectrically coated, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eFILTER SIZE\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003e2 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eFILTER USAGE\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003eCMOS, Contrast Enhancement, O-III, Planetary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eFILTER MOUNTED\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003eMounted (LPFC 6mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eTYPE OF FILTER\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003eNarrowband\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eSINGLE OR SET?\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth data-mce-fragment=\"1\" class=\"label\"\u003eFILTER SHAPE\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" class=\"data\"\u003eround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003eBaader 2 year warranty : Returns and Warranty Policies — Alpine Astronomical LLC\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLimited-Lifetime-Warranty for CMOS-optimized Baader filters\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA Baader Planetarium exclusive. Filters incorporating Baader Planetarium’s Life-Coat™ technology are so durable that Baader Planetarium warrants the coatings for the life of the filter. Baader Planetarium has developed Life-Coat™ using materials and processes that result in coatings which will not degrade or fail for a lifetime. Life-Coat™ coatings resist moisture, temperature extremes, and are hardened to withstand normal cleanings.\u003c\/p\u003e\n\u003cp\u003eBaader Planetarium guarantees their Life-Coat™ coatings will not peel, flake or physically degrade and will withstand repeated cleaning with fine optical cleaning equipment. The Limited Lifetime Warranty applies to the original purchaser and does not cover failure from misuse, physical damage through improper handling, or improper cleaning.\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25 inch","offer_id":52384156778716,"sku":"izx1787937785993","price":67.64,"currency_code":"USD","in_stock":true},{"title":"2 inch","offer_id":52384156811484,"sku":"otq1787937785994","price":125.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/baader-o-iii-super-g-filter-9nm---cmos-optimized-foiiisg_1.webp?v=1787937792"},{"product_id":"explore-scientific-nebula-filter-cls-125-inch-310225","title":"Explore Scientific Nebula Filter CLS 1.25-inch (310225)","description":"\u003ch1\u003eExplore Scientific Nebula Filter CLS 1.25-inch\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eExplore Scientific Nebula Filter 1.25\" CLS Range from 436nm to 536nm with peak at 488nm. Transmission 98.3%\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis is a general-purpose light-pollution reduction filter designed for observing the broad range of deep sky objects including nebulae and galaxies. The CLS \u003cspan\u003edoes a good job of increasing contrast, providing a darker sky background.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIn the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eExplore Scientific Nebula Filter CLS 1.25-inch\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWarranty\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific 1-Year Warranty (You need to register)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52384156975324,"sku":"alv1787937795883","price":63.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/explore-scientific-nebula-filter-cls-125-inch-310225_1.webp?v=1787937800"},{"product_id":"explore-scientific-nebula-filter-s-ii-125-inch-65nm-310125","title":"Explore Scientific Nebula Filter S-II 1.25-inch 6.5nm (310125)","description":"\u003ch1\u003eExplore Scientific Nebula Filter S-II 1.25-inch 6.5nm\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eHigh quality Explore Scientific S-II filter\u003c\/li\u003e\n\u003cli\u003eAbsorbs all other emission lines\u003c\/li\u003e\n\u003cli\u003eAbsorbs almost all of the artificial light\u003c\/li\u003e\n\u003cli\u003ePassband bandwidth: 6.5 nm\u003c\/li\u003e\n\u003cli\u003eFor observing faint planetary nebulae, emission nebulae and supernova remnants\u003c\/li\u003e\n\u003cli\u003eMore contrast and details for all urban observers and astrophotographers\u003c\/li\u003e\n\u003cli\u003eAn individual test report of this premium filter is included in the scope of delivery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn addition to the turbulence in the air, the brightening of the night sky is the greatest obstacle to observing faint objects beyond the solar system. Street lights and other artificial lighting mean that the sky in human settlements is no longer properly black. As a result, the contrast and thus the perception of the deep-sky objects also suffer. Depending on the type of celestial object, however, part of the interfering light can be filtered out, making it easier to observe the objects.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific S-II filter uses the property of the so-called emission mist. These objects glow in certain colors, the so-called emission lines. The emission lines are linked to certain chemical elements - in this case, ionized sulfur. The Explore Scientific S-II nebula filter blocks all other colors (and thus almost all artificial light) and only lets through the emission lines of the ionized sulfur at 672 nm. The effect is amazing: Suddenly, fog becomes visible in places that appear completely empty without a filter. When the sky is slightly brightened, there are many planetary nebulae, emission nebulae, and supernova remnants be seen completely problem-free when using this filter. A must for every amateur visual astronomer and also for astrophotography.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific mist filters are supplied with an individual test report - so you can be sure that you are receiving high-quality filters.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eExplore Scientific Nebula Filter S-II 1.25-inch 6.5nm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific 1-Year Warranty (You need to register)\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52384157008092,"sku":"fpo1787937797321","price":94.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/explore-scientific-nebula-filter-s-ii-125-inch-65nm-310125_1.webp?v=1787937802"},{"product_id":"explore-scientific-nebula-filter-oxygen-iii-125-inch-310205","title":"Explore Scientific Nebula Filter Oxygen III 1.25-inch (310205)","description":"\u003ch1\u003eExplore Scientific Nebula Filter Oxygen III 1.25-inch\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eExplore Scientific Nebula Filter 1.25\" O-III Range from 483nm to 511nm with peak at 496nm. Transmission 96.7%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOxygen III\u003c\/strong\u003e\u003cspan\u003e - This is the highest contrast Nebula Filter in the series, a line filter for only the two emission lines of oxygen. A great choice for observations of supernova remnants and other nebulae that glow in OIII. Other types of objects that glow in all parts of the visible spectrum (e.g. galaxies) are reduced visibly, but some normally invisible regions of nebulae are clearly visible. This filter fits all standard 1.25-inch eyepieces and filter wheels. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIn the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eExplore Scientific Nebula Filter Oxygen III 1.25-inch\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWarranty\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific 1-Year Warranty (You need to register)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52384157040860,"sku":"bct1787937801095","price":85.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/explore-scientific-nebula-filter-oxygen-iii-125-inch-310205_1.webp?v=1787937808"},{"product_id":"explore-scientific-nebula-filter-s-ii-2-inch-12nm-310110","title":"Explore Scientific Nebula Filter S-II 2-inch 12nm (310110)","description":"\u003ch1\u003eExplore Scientific Nebula Filter S-II 2-inch 12nm\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh quality Explore Scientific S-II filter\u003c\/li\u003e\n\u003cli\u003eAbsorbs all other emission lines\u003c\/li\u003e\n\u003cli\u003eAbsorbs almost all of the artificial light\u003c\/li\u003e\n\u003cli\u003ePassband bandwidth: 12 nm\u003c\/li\u003e\n\u003cli\u003eFor observing faint planetary nebulae, emission nebulae and supernova remnants\u003c\/li\u003e\n\u003cli\u003eMore contrast and details for all urban observers and astrophotographers\u003c\/li\u003e\n\u003cli\u003eAn individual test report of this premium filter is included in the scope of delivery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn addition to the turbulence in the air, the brightening of the night sky is the greatest obstacle to observing faint objects beyond the solar system. Street lights and other artificial lighting mean that the sky in human settlements is no longer properly black. As a result, the contrast and thus the perception of the deep-sky objects also suffer. Depending on the type of celestial object, however, part of the interfering light can be filtered out, making it easier to observe the objects.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific S-II filter uses the property of the so-called emission mist. These objects glow in certain colors, the so-called emission lines. The emission lines are linked to certain chemical elements - in this case, ionized sulfur. The Explore Scientific S-II nebula filter blocks all other colors (and thus almost all artificial light) and only lets through the emission lines of the ionized sulfur at 672 nm. The effect is amazing: Suddenly, fog becomes visible in places that appear completely empty without a filter. When the sky is slightly brightened, there are many planetary nebulae, emission nebulae, and supernova remnants be seen completely problem-free when using this filter. A must for every amateur visual astronomer and also for astrophotography.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific mist filters are supplied with an individual test report - so you can be sure that you are receiving high-quality filters.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eExplore Scientific Nebula Filter S-II 2-inch 12nm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific 1-Year Warranty (You need to register)\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52384157073628,"sku":"frm1787937805897","price":120.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/explore-scientific-nebula-filter-s-ii-2-inch-12nm-310110_1.webp?v=1787937810"},{"product_id":"explore-scientific-nebula-filter-h-alpha-2-inch-12nm-310130","title":"Explore Scientific Nebula Filter H-Alpha 2-inch 12nm (310130)","description":"\u003ch1\u003eExplore Scientific Nebula Filter H-Alpha 2-inch 12nm\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh quality Explore Scientific H-Alpha filter\u003c\/li\u003e\n\u003cli\u003eLets only the emission lines of hydrogen \"through\"\u003c\/li\u003e\n\u003cli\u003eAbsorbs almost all of the artificial light\u003c\/li\u003e\n\u003cli\u003eMore contrast and details for all urban astrophotographers\u003c\/li\u003e\n\u003cli\u003ePassband bandwidth: 12 nm\u003c\/li\u003e\n\u003cli\u003eH-alpha filters can only be used for astrophotography\u003c\/li\u003e\n\u003cli\u003eIdeal for use near cities with a slightly brightened sky\u003c\/li\u003e\n\u003cli\u003eAlso blocks almost all light from mercury and sodium vapor lamps\u003c\/li\u003e\n\u003cli\u003eMany of the red glowing emission nebulae are only visible to their full extent on photos with these filters\u003c\/li\u003e\n\u003cli\u003eIn spite of the existing light pollution, this results in surprisingly good image results\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn addition to the turbulence in the air, the brightening of the night sky is the greatest obstacle to observing faint objects beyond the solar system. Street lights and other artificial lighting mean that the sky in human settlements is no longer properly black. As a result, the contrast and thus the perception of the deep-sky objects also suffer. Depending on the type of celestial object, however, part of the interfering light can be filtered out, thus making it easier to photograph the objects.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific H-Alpha filter uses the property of the so-called emission mist. These objects glow in certain colors, the so-called emission lines. The emission lines are linked to certain chemical elements - in this case the red glowing hydrogen. This filter blocks all other colors (and thus almost all artificial light) and only lets through the emission lines of the hydrogen. In particular, the disruptive light from mercury and sodium vapor lamps is effectively blocked. The effect is amazing: Suddenly fog becomes visible in the photos in places that appear completely empty without a filter.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific H-alpha mist filter has been developed exclusively for astrophotography. Especially when the sky is slightly brightened, many emission nebulae only come to light when this filter is used and are shown in full extent on the astrophotos. The H-alpha nebula filters make astrophotography near cities possible and their use leads to surprisingly good image results despite the existing light pollution. A must for every urban astrophotographer.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific mist filters are supplied with an individual test report - so you can be sure that you are receiving high-quality filters.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eExplore Scientific Nebula Filter H-Alpha 2-inch 12nm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific 1-Year Warranty (You need to register)\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52384157139164,"sku":"bfr1787937807698","price":141.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/explore-scientific-nebula-filter-h-alpha-2-inch-12nm-310130_1.webp?v=1787937812"},{"product_id":"baader-acf-dslr-astro-conversion-filter-eos-300d-facf-1","title":"Baader ACF DSLR Astro Conversion Filter EOS 300D (FACF-1)","description":"\u003ch1\u003eBaader ACF DSLR Astro Conversion Filter EOS 300D\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDSLR Conversion Filter for\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eCanon EOS 300D\u003c\/p\u003e\n\u003cp\u003eTurn your Canon DSLR into a superb deep sky AstroCamera. Baader's DSLR conversion filters replace the factory correcting filter (\"hot mirror\"). The special substrate is coated with Baader's renowned coatings. Imagers can now gain full efficiency at H-Alpha wavelengths, and at full resolution (the Baader filter eliminates the Canon factory moire filter, which reduces resolution on astronomical subjects). The thickness of the Baader DSLR filters have been designed to maintain the correct factory focal point (please note: The Baader filter is intentionally of a different thickness than the factory filter - this is required to match the effective index of refraction of the factory 'sandwich' filter).\u003c\/p\u003e\n\u003cp\u003eThe Baader DSLR Conversion Filters are produced to the same specifications and by the same processes used for all of their other premium Baader Astronomical Filters. Each filter is optically polished to 1\/4 wave and most importantly the ionbeam hardened coatings are applied AFTER cutting and polishing. This important aspect guarantees that your coatings will not peel or degrade due to the softer coatings and edge damage caused by post-cutting operations used by some other filters to cut costs. With a Baader filter, you never need to worry that your internal DSLR Conversion filter will fail prematurely.\u003c\/p\u003e\n\u003cp\u003eThis filter is intended for amateurs that are comfortable replacing their camera's stock filter. Please Note: For best performance we recommend installing the filter with the coated (pinkish) side facing out (FACF-1, II, III). The FBCF-400D is clear with no pinkish side and does not require any particular orientation. The digital astro eGroup is a great place for advice on how to replace this filter.\u003c\/p\u003e\n\u003cp\u003eHere is a link to a very well done filter replacement tutorial:\u003cspan\u003e \u003c\/span\u003ehttp:\/\/www.lifepixel.com\/ir-tutorials\/canon-rebel-xt-300d-digital-infrared-conversion-instructions.htm\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHere's a very nice YouTube video done by Gary Honis on retrofitting a Canon 450D with the FBCF-400D: \u003c\/span\u003ehttp:\/\/www.youtube.com\/watch?v=-IIN0-q2WLY\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable class=\"data-table\" id=\"product-attribute-specs-table\" style=\"width: 100.073%;\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"first odd\"\u003e\n\u003cth class=\"label\" style=\"width: 36.6838%;\"\u003eMANUFACTURER\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 63.0961%;\"\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth class=\"label\" style=\"width: 36.6838%;\"\u003eSKU (#)\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 63.0961%;\"\u003e2459211\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth class=\"label\" style=\"width: 36.6838%;\"\u003eEAN CODE\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 63.0961%;\"\u003e4047825008985\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth class=\"label\" style=\"width: 36.6838%;\"\u003eWEIGHT (KG)\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 63.0961%;\"\u003e0.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth class=\"label\" style=\"width: 36.6838%;\"\u003eTRANSMISSION RANGE\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 63.0961%;\"\u003e400 – 700 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth class=\"label\" style=\"width: 36.6838%;\"\u003eAR-COATING\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 63.0961%;\"\u003edielectrically coated, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth class=\"label\" style=\"width: 36.6838%;\"\u003eFILTER SIZE\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 63.0961%;\"\u003eother\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth class=\"label\" style=\"width: 36.6838%;\"\u003eFILTER USAGE\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 63.0961%;\"\u003eColor Correction, H-alpha, IR-Cut, UV-Cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth class=\"label\" style=\"width: 36.6838%;\"\u003eFILTER MOUNTED\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 63.0961%;\"\u003eUnmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth class=\"label\" style=\"width: 36.6838%;\"\u003eSINGLE OR SET?\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 63.0961%;\"\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"last odd\"\u003e\n\u003cth class=\"label\" style=\"width: 36.6838%;\"\u003eFILTER SHAPE\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 63.0961%;\"\u003erectangular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eACF DSLR Astro Conversion Filter EOS 300D\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003eBaader 2 year warranty : Returns and Warranty Policies — Alpine Astronomical LLC\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":52384157171932,"sku":"bsa1787937807626","price":62.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/baader-acf-dslr-astro-conversion-filter-eos-300d-facf-1_1.webp?v=1787937812"},{"product_id":"explore-scientific-nebula-filter-oxygen-iii-20-inch-310200","title":"Explore Scientific Nebula Filter Oxygen III 2.0-inch (310200)","description":"\u003ch1\u003eExplore Scientific Nebula Filter Oxygen III 2.0-inch\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eExplore Scientific Nebula Filter 1.25\" O-III Range from 483nm to 511nm with peak at 496nm. Transmission 96.7%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOxygen III\u003c\/strong\u003e\u003cspan\u003e - This is the highest contrast Nebula Filter in the series, a line filter for only the two emission lines of oxygen. A great choice for observations of supernova remnants and other nebulae that glow in OIII. Other types of objects that glow in all parts of the visible spectrum (e.g. galaxies) are reduced visibly, but some normally invisible regions of nebulae are clearly visible. This filter fits all standard 2.0-inch eyepieces and filter wheels. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIn the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eExplore Scientific Nebula Filter Oxygen III 2.0-inch\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWarranty\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific 1-Year Warranty (You need to register)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52384157270236,"sku":"jbm1787937811366","price":107.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/explore-scientific-nebula-filter-oxygen-iii-20-inch-310200_1.webp?v=1787937815"},{"product_id":"explore-scientific-nebula-filter-uhc-20-inch-310210","title":"Explore Scientific Nebula Filter UHC 2.0-inch (310210)","description":"\u003ch1\u003eExplore Scientific Nebula Filter UHC 2.0-inch\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eExplore Scientific Nebula Filter 2.0\" UHC Range from 458nm to 508nm with peak at 488nm. Transmission 96.7%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUHC\u003c\/strong\u003e\u003cspan\u003e - This is an ultra-high contrast narrow-band filter, designed for observing the broad range of nebulae with 2.0-inch standard eyepieces or filter wheels. The bandpass is tighter than the CLS Nebula Filter, thereby blocking even more light from artificial lights and airglow.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIn the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eExplore Scientific Nebula Filter UHC 2.0-inch\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWarranty\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific 1-Year Warranty (You need to register)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52384157303004,"sku":"dql1787937818818","price":99.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/explore-scientific-nebula-filter-uhc-20-inch-310210_1.webp?v=1787937823"},{"product_id":"explore-scientific-nebula-filter-h-beta-20-inch-310230","title":"Explore Scientific Nebula Filter H-Beta 2.0-inch (310230)","description":"\u003ch1\u003eExplore Scientific Nebula Filter H-Beta 2.0-inch\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eExplore Scientific Nebula Filter 1.25\" H-Beta Range from 478nm to 496nm with peak at 489nm. Transmission 94.5%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eH-Beta\u003c\/strong\u003e\u003cspan\u003e - Hydrogen is the most abundant element in the universe and many nebulae glow in the light of H-beta. This line filter blocks all other wavelengths (and thereby nearly all of the artificial light) and only the emission line of hydrogen beta will pass. This filter fits all standard 2.0-inch eyepieces and filter wheels. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIn the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eExplore Scientific Nebula Filter H-Beta 2.0-inch\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWarranty\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific 1-Year Warranty (You need to register)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52384157335772,"sku":"yqw1787937818803","price":114.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/explore-scientific-nebula-filter-h-beta-20-inch-310230_1.webp?v=1787937824"},{"product_id":"explore-scientific-neutral-density-filter-125-nd-09-310245","title":"Explore Scientific Neutral Density Filter 1.25\" ND 0.9 (310245)","description":"\u003ch1\u003eExplore Scientific Neutral Density Filter 1.25\" ND 0.9\u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eThe neutral density filter transmits light uniformly across the entire visual spectrum. It serves as an excellent filter to reduce glare and irradiation when observing the Moon with any telescope 4\"(10.2cm) and larger. The ND96 filter may also be employed in the splitting of close double stars where one of the binary pair significantly exceeds the other in brightness.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eColor Filter #ND96 Moon Filter (0.9 density; 13% transmission)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIn the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eExplore Scientific Neutral Density Filter 1.25\" ND 0.9\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWarranty\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific 1-Year Warranty (You need to register)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52384157368540,"sku":"jtj1787937799181","price":19.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/explore-scientific-neutral-density-filter-125-nd-09-310245_1.webp?v=1787937826"},{"product_id":"optolong-l-para-10nm-dual-narrowband-light-pollution-filter-l-para-2","title":"Optolong L-Para 10nm Dual Narrowband Light Pollution Filter (L-PARA-2)","description":"\u003ch1 class=\"title\"\u003eOptolong L-Para 10nm Dual Narrowband Light Pollution Filter\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do we make a L-Para filter with a dual band of 10nm?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn Chinese culture, the number ten symbolizes perfection in every way. An idiom in Chinese, 'shi quan shi mei' epitomizes reaching the best and most ideal state. Therefore, we aspire for the L-Para filter to achieve this standard. Specifically, it operates in dual bands, each with a width of 10nm. The repetition of the number ten signifies double wishes for your photography experiences and clear skies always. \u003c\/p\u003e\n\u003cp\u003eDuring the research phase, L-Para is dedicated to optimizing halo performance and effectively blocking out light pollution emissions. Images captured by L- Para will exhibit a dark background and precise colors. Halos around bright stars are caused by a complex optical chain. While we can't say no halo, but we believe that L-Para offers a entirely new perspective. \u003c\/p\u003e\n\u003cp\u003eAdditionally, L-Para is compatible with both fast optics and normal optics, covering focal ratios from F2 and above. One filter is designed to work with all your telescopes. L-Para, bringing you greater efficiency.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e1.  Optolong L-Para(L-Parallels)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eOptolong L-Para is a brand new dual narrowband 10nm light pollution filter. The FWHM of L-Para is 10nm for OIII (500.7nm) and H-Alpha (656.3nm) respectively. The transmittance of nebulae emission lines at are both greater than 85% in system with focal ratios of F2 and above. It effectively filters out mercury lamp, sodium lamp, and LED light pollution emission lines. At the same time, it has excellent contrast and anti-halo characteristics, allowing you to capture detailed and vivid nebula images. L-Para is suitable for both normal optical systems and fast optical systems, such as RASA and Hyperstar systems. Even when light is incident at an oblique angle, it can still maintain high transmission rates to provide you with a clear and precise shooting experience.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA dual narrowband filter suitable for all telescope systems, adaptable to fast optics (focal ratios of F2, F2.8, F3.2, F4) as well as various standard\/normal focal ratio telescopes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLight Pollution Resistance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEffectively cuts off emission lines from mercury lamps, sodium lamps, LEDs, and other light pollution sources, making it applicable to Bortle Scale1- 7 dark skies.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Transmission Rate:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn systems with a focal ratio of F2 and above, the transmittance of nebula emission lines OIII and Ha exceed 85%, resulting in higher imaging efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExcellent Contrast:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe high transmittance of nebula emission lines (OIII \u0026amp; Ha) combined with deep cut-off of light pollution bands significantly improves image contrast and detail richness.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnti-Halo Characteristics:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe design has undergone several round of optimizations and many times of repeated testing ,resulting in a marked improvement in anti-halo performance, enhancing the capture of bright stars.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e2.Spectrum\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAccording to the characteristics of the emission lines of celestial bodies and light pollution, as well as the characteristicas of the normal telescope and fast ratio imaging system, L-Para has been maintaining high transmittance at OIII and Ha while blocking light pollution emission lines.\u003c\/p\u003e\n\u003cp\u003e\u003cimg height=\"592\" width=\"1034\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/9b96104f725faacefa9ded926bfab8da.png?v=1736024501\u0026amp;width=700\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg height=\"498\" width=\"1025\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/2700143340459da0e3aa3e900c9c60f4.png?v=1736024535\u0026amp;width=700\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg height=\"523\" width=\"1080\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/ec92b95b51a57afdfb563adfcf710c88.png?v=1736024560\u0026amp;width=700\"\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e3. Coating Technology\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e·Multi-layers anti-reflection coating\u003c\/p\u003e\n\u003cp\u003e·Non-cementing optical substrate coating\u003c\/p\u003e\n\u003cp\u003e·Optolong filter adopts precision coating based on Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL(central wavelength) no deviation affected by temperature change.\u003c\/p\u003e\n\u003cp\u003e·Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications \u003c\/h3\u003e\n\u003cp\u003e2\"（M48×0.75） \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOuter Box: silve box\u003c\/li\u003e\n\u003cli\u003ePlastic Box: PP material\u003c\/li\u003e\n\u003cli\u003eLining: imported high pressure white EVA material\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eOptolong Warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":52384157401308,"sku":"shp1787937823636","price":200.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/optolong-l-para-10nm-dual-narrowband-light-pollution-filter-l-para-2_1.png?v=1787937828"},{"product_id":"explore-scientific-nebula-filter-s-ii-125-inch-12nm-310115","title":"Explore Scientific Nebula Filter S-II 1.25-inch 12nm (310115)","description":"\u003ch1\u003eExplore Scientific Nebula Filter S-II 1.25-inch 12nm\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eHigh quality Explore Scientific S-II filter\u003c\/li\u003e\n\u003cli\u003eAbsorbs all other emission lines\u003c\/li\u003e\n\u003cli\u003eAbsorbs almost all of the artificial light\u003c\/li\u003e\n\u003cli\u003ePassband bandwidth: 12 nm\u003c\/li\u003e\n\u003cli\u003eFor observing faint planetary nebulae, emission nebulae and supernova remnants\u003c\/li\u003e\n\u003cli\u003eMore contrast and details for all urban observers and astrophotographers\u003c\/li\u003e\n\u003cli\u003eAn individual test report of this premium filter is included in the scope of delivery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn addition to the turbulence in the air, the brightening of the night sky is the greatest obstacle to observing faint objects beyond the solar system. Street lights and other artificial lighting mean that the sky in human settlements is no longer properly black. As a result, the contrast and thus the perception of the deep-sky objects also suffer. Depending on the type of celestial object, however, part of the interfering light can be filtered out, making it easier to observe the objects.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific S-II filter uses the property of the so-called emission mist. These objects glow in certain colors, the so-called emission lines. The emission lines are linked to certain chemical elements - in this case, ionized sulfur. The Explore Scientific S-II nebula filter blocks all other colors (and thus almost all artificial light) and only lets through the emission lines of the ionized sulfur at 672 nm. The effect is amazing: Suddenly, fog becomes visible in places that appear completely empty without a filter. When the sky is slightly brightened, there are many planetary nebulae, emission nebulae, and supernova remnants be seen completely problem-free when using this filter. A must for every amateur visual astronomer and also for astrophotography.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific mist filters are supplied with an individual test report - so you can be sure that you are receiving high-quality filters.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eExplore Scientific Nebula Filter S-II 1.25-inch 12nm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific 1-Year Warranty (You need to register)\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52384157597916,"sku":"vmr1787937830201","price":90.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/explore-scientific-nebula-filter-s-ii-125-inch-12nm-310115_1.webp?v=1787937834"},{"product_id":"explore-scientific-nebula-filter-h-alpha-125-inch-12nm-310135","title":"Explore Scientific Nebula Filter H-Alpha 1.25-inch 12nm (310135)","description":"\u003ch1\u003eExplore Scientific Nebula Filter H-Alpha 1.25-inch 12nm\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh quality Explore Scientific H-Alpha filter\u003c\/li\u003e\n\u003cli\u003eLets only the emission lines of hydrogen \"through\"\u003c\/li\u003e\n\u003cli\u003eAbsorbs almost all of the artificial light\u003c\/li\u003e\n\u003cli\u003eMore contrast and details for all urban astrophotographers\u003c\/li\u003e\n\u003cli\u003ePassband bandwidth: 12 nm\u003c\/li\u003e\n\u003cli\u003eH-alpha filters can only be used for astrophotography\u003c\/li\u003e\n\u003cli\u003eIdeal for use near cities with a slightly brightened sky\u003c\/li\u003e\n\u003cli\u003eAlso blocks almost all light from mercury and sodium vapor lamps\u003c\/li\u003e\n\u003cli\u003eMany of the red glowing emission nebulae are only visible to their full extent on photos with these filters\u003c\/li\u003e\n\u003cli\u003eIn spite of the existing light pollution, this results in surprisingly good image results\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eIn addition to the turbulence in the air, the brightening of the night sky is the greatest obstacle to observing faint objects beyond the solar system. Street lights and other artificial lighting mean that the sky in human settlements is no longer properly black. As a result, the contrast and thus the perception of the deep-sky objects also suffer. Depending on the type of celestial object, however, part of the interfering light can be filtered out, thus making it easier to photograph the objects.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific H-Alpha filter uses the property of the so-called emission mist. These objects glow in certain colors, the so-called emission lines. The emission lines are linked to certain chemical elements - in this case the red glowing hydrogen. This filter blocks all other colors (and thus almost all artificial light) and only lets through the emission lines of the hydrogen. In particular, the disruptive light from mercury and sodium vapor lamps is effectively blocked. The effect is amazing: Suddenly fog becomes visible in the photos in places that appear completely empty without a filter.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific H-alpha mist filter has been developed exclusively for astrophotography. Especially when the sky is slightly brightened, many emission nebulae only come to light when this filter is used and are shown in full extent on the astrophotos. The H-alpha nebula filters make astrophotography near cities possible and their use leads to surprisingly good image results despite the existing light pollution. A must for every urban astrophotographer.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific mist filters are supplied with an individual test report - so you can be sure that you are receiving high-quality filters.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eExplore Scientific Nebula Filter H-Alpha 1.25-inch 12nm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific 1-Year Warranty (You need to register)\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52384157630684,"sku":"trx1787937831573","price":78.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/explore-scientific-nebula-filter-h-alpha-125-inch-12nm-310135_1.webp?v=1787937837"},{"product_id":"explore-scientific-nebula-filter-h-alpha-2-inch-7nm-310140","title":"Explore Scientific Nebula Filter H-Alpha 2-inch 7nm (310140)","description":"\u003ch1\u003eExplore Scientific Nebula Filter H-Alpha 2-inch 7nm\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh quality Explore Scientific H-Alpha filter\u003c\/li\u003e\n\u003cli\u003eLets only the emission lines of hydrogen \"through\"\u003c\/li\u003e\n\u003cli\u003eAbsorbs almost all of the artificial light\u003c\/li\u003e\n\u003cli\u003eMore contrast and details for all urban astrophotographers\u003c\/li\u003e\n\u003cli\u003ePassband bandwidth: 7 nm\u003c\/li\u003e\n\u003cli\u003eH-alpha filters can only be used for astrophotography\u003c\/li\u003e\n\u003cli\u003eNarrow-band design for difficult city conditions and with heavily brightened skies\u003c\/li\u003e\n\u003cli\u003eAlso blocks almost all light from mercury and sodium vapor lamps\u003c\/li\u003e\n\u003cli\u003eMany of the red glowing emission nebulae are only visible to their full extent on photos with these filters\u003c\/li\u003e\n\u003cli\u003eIn spite of the existing light pollution, this results in surprisingly good image results\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eIn addition to the turbulence in the air, the brightening of the night sky is the greatest obstacle to observing faint objects beyond the solar system. Street lights and other artificial lighting mean that the sky in human settlements is no longer properly black. As a result, the contrast and thus the perception of the deep-sky objects also suffer. Depending on the type of celestial object, however, part of the interfering light can be filtered out, thus making it easier to photograph the objects.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific H-Alpha filter uses the property of the so-called emission mist. These objects glow in certain colors, the so-called emission lines. The emission lines are linked to certain chemical elements - in this case the red glowing hydrogen. This filter blocks all other colors (and thus almost all artificial light) and only lets through the emission lines of the hydrogen. In particular, the disruptive light from mercury and sodium vapor lamps is effectively blocked. The effect is amazing: Suddenly fog becomes visible in the photos in places that appear completely empty without a filter.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific H-alpha mist filter has been developed exclusively for astrophotography. Especially when the sky is slightly brightened, many emission nebulae only come to light when this filter is used and are shown in full extent on the astrophotos. The H-alpha nebula filters make astrophotography near cities possible and their use leads to surprisingly good image results despite the existing light pollution. A must for every urban astrophotographer.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific mist filters are supplied with an individual test report - so you can be sure that you are receiving high-quality filters.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eExplore Scientific Nebula Filter H-Alpha 2-inch 7nm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific 1-Year Warranty (You need to register)\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52384157663452,"sku":"fyw1787937833523","price":168.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/explore-scientific-nebula-filter-h-alpha-2-inch-7nm-310140_1.webp?v=1787937837"},{"product_id":"baader-ubvri-bessel-filters-v-filter-photometric","title":"Baader UBVRI Bessel Filters V-Filter – Photometric","description":"\u003ch1\u003eBaader UBVRI Bessel Filters V-Filter – Photometric\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eBaader Bessel-UBVRI Bandpass Filter Set, suitable from f\/15 to f\/1.8\u003c\/li\u003e\n\u003cli\u003eClassic photometric filters with transmission according to Bessel – parfocal with all Baader filters of the same size\u003c\/li\u003e\n\u003cli\u003eManufactured with most advanced ion beam coating technology \/ Daylight-Proof\u003c\/li\u003e\n\u003cli\u003eReflex-Blocker™ hard coated and planeoptically polished – with sealed coating edges (Life-Coat™)\u003c\/li\u003e\n\u003cli\u003eBlackened edges all around, with filter-lead-side-indicator in the form of a telescope-sided black outer rim\u003c\/li\u003e\n\u003cli\u003eEqually suitable for modern CMOS cameras as well as for older CCD camera technologies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe new generation of Baader CMOS-optimized filters features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReflex-Blocker™ coatings, for largest ever freedom from halos, even under most adverse conditions concerning aux-optics\u003c\/li\u003e\n\u003cli\u003eIdentical filter thickness to existing standards, with utmost care for parfocality\u003c\/li\u003e\n\u003cli\u003eBlackened edges all around, with filter-lead-side-indicator in the form of a black frontside outer rim, to additionally eliminate any reflection due to light falling onto the edge of a filter\u003c\/li\u003e\n\u003cli\u003eEach filter coated individually, with sealed coating edge (NOT cut out of a larger plate with coatings left exposed read more)\u003c\/li\u003e\n\u003cli\u003eLife-Coat™: evermore hard coatings to enable a non-aging coating for life – even in a most adverse environment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"data-table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eMANUFACTURER\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eCOLOUR\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eTRANSMISSION RANGE\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eTransmission according to Bessel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eFILTER THICKNESS (WITHOUT CELL)\u003c\/th\u003e\n\u003ctd 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Warranty\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":52384157696220,"sku":"nqk1787937834360","price":113.14,"currency_code":"USD","in_stock":true},{"title":"2\"","offer_id":52384157728988,"sku":"buc1787937834361","price":132.03,"currency_code":"USD","in_stock":true},{"title":"31 mm","offer_id":52384157761756,"sku":"slb1787937834362","price":117.65,"currency_code":"USD","in_stock":true},{"title":"36mm","offer_id":52384157794524,"sku":"qau1787937834363","price":117.9,"currency_code":"USD","in_stock":true},{"title":"50.4mm","offer_id":52384157827292,"sku":"toq1787937834364","price":152.15,"currency_code":"USD","in_stock":true},{"title":"50 x 50 mm","offer_id":52384157860060,"sku":"pja1787937834365","price":152.2,"currency_code":"USD","in_stock":true},{"title":"65 x 65 mm","offer_id":52384157892828,"sku":"iwe1787937834366","price":219.09,"currency_code":"USD","in_stock":true},{"title":"100 x 100 mm","offer_id":52384157925596,"sku":"oki1787937834367","price":502.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/baader-ubvri-bessel-filters-v-filter-photometric_1.webp?v=1787937839"},{"product_id":"explore-scientific-nebula-filter-s-ii-2-inch-65nm-310120","title":"Explore Scientific Nebula Filter S-II 2-inch 6.5nm (310120)","description":"\u003ch1\u003eExplore Scientific Nebula Filter S-II 2-inch 6.5nm\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eHigh quality Explore Scientific S-II filter\u003c\/li\u003e\n\u003cli\u003eAbsorbs all other emission lines\u003c\/li\u003e\n\u003cli\u003eAbsorbs almost all of the artificial light\u003c\/li\u003e\n\u003cli\u003ePassband bandwidth: 6.5 nm\u003c\/li\u003e\n\u003cli\u003eFor observing faint planetary nebulae, emission nebulae and supernova remnants\u003c\/li\u003e\n\u003cli\u003eMore contrast and details for all urban observers and astrophotographers\u003c\/li\u003e\n\u003cli\u003eAn individual test report of this premium filter is included in the scope of delivery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn addition to the turbulence in the air, the brightening of the night sky is the greatest obstacle to observing faint objects beyond the solar system. Street lights and other artificial lighting mean that the sky in human settlements is no longer properly black. As a result, the contrast and thus the perception of the deep-sky objects also suffer. Depending on the type of celestial object, however, part of the interfering light can be filtered out, making it easier to observe the objects.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific S-II filter uses the property of the so-called emission mist. These objects glow in certain colors, the so-called emission lines. The emission lines are linked to certain chemical elements - in this case, ionized sulfur. The Explore Scientific S-II nebula filter blocks all other colors (and thus almost all artificial light) and only lets through the emission lines of the ionized sulfur at 672 nm. The effect is amazing: Suddenly, fog becomes visible in places that appear completely empty without a filter. When the sky is slightly brightened, there are many planetary nebulae, emission nebulae, and supernova remnants be seen completely problem-free when using this filter. A must for every amateur visual astronomer and also for astrophotography.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific mist filters are supplied with an individual test report - so you can be sure that you are receiving high-quality filters.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eExplore Scientific Nebula Filter S-II 2-inch 6.5nm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific 1-Year Warranty (You need to register)\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52384158613724,"sku":"nmf1787937843427","price":154.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/explore-scientific-nebula-filter-s-ii-2-inch-65nm-310120_1.webp?v=1787937848"},{"product_id":"astronomy-plus-125-lunar-and-planetary-color-filter-set-with-aluminum-case-ta190","title":"Astronomy Plus 1.25\" Lunar and Planetary Color Filter Set with Aluminum Case (TA190)","description":"\u003ch1\u003eAstronomy Plus 1.25\" Lunar and Planetary Color Filter Set\u003c\/h1\u003e\n\u003cp\u003eColor filters are valuable tools in astronomy for enhancing the details and contrast of celestial objects, especially planets. These filters work by selectively blocking certain wavelengths of light, which helps reveal surface features or atmospheric structures that might otherwise be difficult to see.\u003c\/p\u003e\n\u003cp\u003eFor example, a deep yellow filter can improve contrast on the Moon, making surface features more distinct, while also helping to bring out the equatorial belts of Jupiter or the polar ice caps on Mars. An orange filter sharpens the boundaries of Mars' plains and enhances the details of Jupiter and Saturn's belts. A blue filter enhances the contrast of Jupiter’s cloud belts and can also reveal more detail in Saturn’s polar regions.\u003c\/p\u003e\n\u003cp\u003eWith their versatility, these filters can be used individually or stacked together, allowing astronomers to customize their observing experience.\u003c\/p\u003e\n\u003cp\u003eThis color filter kit includes six 1.25\" filters, each designed to enhance specific features of celestial objects. The filters come neatly stored in a durable aluminum carrying case, ensuring they are protected, easily accessible, and ready for use during your stargazing sessions.\u003c\/p\u003e\n\u003cp\u003eThe kit comprise of :\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNo. 12 - Yellow\u003c\/li\u003e\n\u003cli\u003eNo. 21 - Orange\u003c\/li\u003e\n\u003cli\u003eNo 23A - Red\u003c\/li\u003e\n\u003cli\u003eNo. 56 - Light green\u003c\/li\u003e\n\u003cli\u003eNo. 82A - Blue\u003c\/li\u003e\n\u003cli\u003eMoon \u0026amp; Skyglow Filter\u003c\/li\u003e\n\u003cli\u003eCase for filters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable border=\"0\" cellspacing=\"0\"\u003e\n\u003ccolgroup width=\"85\" span=\"3\"\u003e\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\" height=\"17\"\u003eFilter\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eColor\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eUse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\" height=\"17\"\u003eNo. 12\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eYellow\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eImprove Contrast on Moon, Jupiter and Saturn. Ice caps on Mars.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\" height=\"17\"\u003eNo. 21\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eOrange\u003c\/td\u003e\n\u003ctd align=\"center\"\u003ePlains of Mars. Belts on Jupiter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\" height=\"17\"\u003eNo. 23A\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eRed\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eContrast on Mercury, Venus, and Mars\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\" height=\"17\"\u003eNo. 56\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eLight green\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eContrast on Moon and Venus. Caps of Mars.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\" height=\"17\"\u003eNo. 82A\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eBlue\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eBelts on Jupiter, Cap on Saturn.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\" height=\"17\"\u003eMoon \u0026amp; Skyglow\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eNeutral\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eGreat on Moon and Venus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003e- 6 filters :\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNo.12 (Yellow)\u003c\/li\u003e\n\u003cli\u003eNo.21 (Orange)\u003c\/li\u003e\n\u003cli\u003eNo.23A (Red)\u003c\/li\u003e\n\u003cli\u003eNo.56 (Light green)\u003c\/li\u003e\n\u003cli\u003eNo.82A (Blue)\u003c\/li\u003e\n\u003cli\u003eMoon \u0026amp; Skyglow\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e- Aluminum carrying case\u003c\/p\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"xlarge-9 xlarge-centered columns\"\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"single_product_summary_related\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"xlarge-9 xlarge-centered columns\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"large-12 large-centered columns\"\u003eAstronomy Plus 1-Year Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Astronomy Plus","offers":[{"title":"Default Title","offer_id":52384158712028,"sku":"xgj1787937834311","price":30.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/astronomy-plus-125-lunar-and-planetary-color-filter-set-with-aluminum-case-ta190_1.jpg?v=1787937853"}],"url":"https:\/\/www.simpledaystore.shop\/collections\/filters.oembed","provider":"My Store","version":"1.0","type":"link"}