{"product_id":"farpoint-camera-filter-bahtinov-focus-mask-cokin-p-cokin-z","title":"Farpoint Camera Filter Bahtinov Focus Mask - Cokin P \/ Cokin Z","description":"\u003ch1\u003eFarpoint Cokin P Camera Filter Bahtinov Focus Mask\u003c\/h1\u003e\n\u003cp\u003eFarpoint Cokin Z Camera Filter Bahtinov Focus Mask is an ingenious new way to easily focus your DSLR camera, webcam or CCD camera for astrophotography. Pavel Bahtinov, a Russian amateur telescope maker and astronomer, created this simple, very intuitive method and the device has universally been named after him: The Bahtinov Mask.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cp\u003eThis Bahtinov Focus Mask mounts on to a Cokin P camera filter cell. Mask is 84mm square. The Cokin Z filter cell is 103mm square.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe Bahtinov focus technique works best with longer focal lengths and becomes less useful with shorter focal lengths. The practical useful limit is around 100mm focal length or longer.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eFarpoint Bahtinov Masks Are one of the best tools for manually focusing your telescope available to astrophotographers. In 2005, Pavel Bahtinov, a Russian amateur telescope maker and astronomer detailed a new way to easily focus your DSLR, CMOS or CCD camera for astrophotography by adding a mask that matches the diameter of your telescope.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eBahtinov mask are a less expensive method of getting focus on objects in the night sky compared to a standard motor focuser.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eWith the right mask and setup it’s easy to get crystal clear focus on a star in less than 90 seconds.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0567\/6639\/8617\/t\/3\/assets\/description_image_image001.gif?v=1621838940\u0026amp;width=700\" data-mce-fragment=\"1\" width=\"201\" height=\"201\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eStar in focus via a Bahtinov mask\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eHow it Works\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe slits in the mask are the focus assist, when the star is in focus it will appear on your screen display as an “X” with a line through the center (see above).\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThese mask will work equally as well on the end of a scope or on the end of a dew shield on top of that the mask itself does not need to be perfected centered on the scope this is due to the angle of the slits themselves.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eSelect a bright star, this will be your guiding object. Place the Bahtinov focusing mask on your telescope’s lens and secure it into place using the provided rubber tabs.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe slits in the mask design create a set of diffraction spikes on the star that will assist in the accuracy of our focus. It will appear on your DSLR display screen or computer as an “X” with a line through the center (when in focus).\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eAs you adjust the focuser of your telescope, the central spike will move in and out of the X-pattern. If you are using capture software be sure to compensate for the lag time between exposures on the screen, typically 4-5 seconds.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe same process applies using Live view display on your DSLR camera. The difference is, the image will be much dimmer, as you are essentially looking at a live video feed rather than a short image exposure.\u003cbr 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\"\u003eFarpoint Camera Filter Bahtinov Focus Mask - Cokin P \/ Cokin Z\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eFarpoint 1-Year Warranty\u003c\/p\u003e","brand":"Farpoint","offers":[{"title":"Cokin P","offer_id":52384249282780,"sku":"ssh1787940058914","price":7.59,"currency_code":"USD","in_stock":true},{"title":"Cokin Z","offer_id":52384249315548,"sku":"gdw1787940058915","price":8.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5592\/1372\/files\/farpoint-camera-filter-bahtinov-focus-mask---cokin-p-cokin-z_1.webp?v=1787940063","url":"https:\/\/www.simpledaystore.shop\/products\/farpoint-camera-filter-bahtinov-focus-mask-cokin-p-cokin-z","provider":"My Store","version":"1.0","type":"link"}