{"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","url":"https:\/\/www.simpledaystore.shop\/products\/astronomik-h-alpha-12nm-ccd-filter","provider":"My Store","version":"1.0","type":"link"}