{"product_id":"farpoint-camera-filter-bahtinov-mask","title":"Farpoint Camera Filter Bahtinov Mask","description":"\u003ch2\u003eFarpoint Camera Filter Bahtinov Mask\u003c\/h2\u003e\n\u003cp\u003e Farpoint 55mm 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\"\u003eThis Bahtinov Focus Mask snaps-in to your camera lenses that have 55mm filter threads.\u003cbr data-mce-fragment=\"1\"\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\"\u003e(Don’t confuse focal length and camera lens size).\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eFarpoint manufactures this “lifesaving” astrophotography tool out of virtually indestructible ABS plastic. In addition to Bahtinov masks for DSLR, webcam or CCD camera lenses, Farpoint also makes Bahtinov masks for telescopes.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eBahtinov 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\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0567\/6639\/8617\/t\/3\/assets\/description_image_image001.gif?v=1621838940\u0026amp;width=700\" width=\"240\" height=\"240\"\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\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 Mask\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":"52 mm","offer_id":54347238932798,"sku":"mke1787947441554","price":10.4,"currency_code":"USD","in_stock":true},{"title":"55 mm","offer_id":54347238965566,"sku":"jhz1787947441555","price":12.35,"currency_code":"USD","in_stock":true},{"title":"58 mm","offer_id":54347238998334,"sku":"wmj1787947441556","price":4.63,"currency_code":"USD","in_stock":true},{"title":"62 mm","offer_id":54347239031102,"sku":"sos1787947441557","price":8.23,"currency_code":"USD","in_stock":true},{"title":"67 mm","offer_id":54347239063870,"sku":"cju1787947441558","price":13.18,"currency_code":"USD","in_stock":true},{"title":"72 mm","offer_id":54347239096638,"sku":"axt1787947441559","price":4.48,"currency_code":"USD","in_stock":true},{"title":"77 mm","offer_id":54347239129406,"sku":"vjz1787947441560","price":13.18,"currency_code":"USD","in_stock":true},{"title":"82 mm","offer_id":54347239162174,"sku":"pts1787947441561","price":9.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/3799\/9934\/files\/farpoint-camera-filter-bahtinov-mask_1.webp?v=1787947446","url":"https:\/\/www.honeyandhearth.shop\/products\/farpoint-camera-filter-bahtinov-mask","provider":"My Store","version":"1.0","type":"link"}