{"title":"Farpoint Imaging Accessories","description":"\u003cp\u003eFarpoint imaging accessories focus on Bahtinov masks, a simple and reliable way to reach precise focus. Placed over the front of the telescope or lens, the mask creates diffraction spikes around a bright star that line up symmetrically when focus is exact.\u003c\/p\u003e\u003cp\u003eThe collection includes Bahtinov and Tri-Bahtinov masks for Celestron and Meade telescopes, a universal mask for apertures from 2.5\" to 10.5\", and camera filter masks for 52-82mm lenses and Cokin holders.\u003c\/p\u003e","products":[{"product_id":"farpoint-bahtinov-focusing-mask-universal-from-2-5-to-10-5","title":"Farpoint Bahtinov Focusing Mask - Universal from 2.5\" to 10.5\"","description":"\u003c!-- more --\u003e\u003cp\u003eFarpoint Bahtinov Focus Mask – Small is an ingenious new way to easily focus a telescope.  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.\u003c\/p\u003e\u003cp\u003eAdjustable Bahtinov focus mask for small telescopes. Adjust the grommets and pegs to fit telescopes with dew shield or tub.\u003c\/p\u003e\u003cp\u003eAttach a camera to the telescope, center a fairly bright star and achieve rough focus. Then place the mask over the front aperture of your telescope by “hanging” it on the plastic screws from the front dew shield. Take a short exposure. The image of the star will show diffraction spikes. The “center” set will most likely be shifted to one side or the other. This is showing the defocus.\u003c\/p\u003e\u003cp\u003eAdjust the focus of the telescope and re-expose the star, once again showing the diffraction spike pattern. Iterate the process until the central diffraction spike is centered against the star and the other spikes. When a symmetrical pattern is achieved, the best possible focus is then reached.  Simply remove the mask, center the target object and take amazing, sharp images!\u003c\/p\u003e\u003cp\u003eFarpoint manufactures this “lifesaving” astrophotography tool out of virtually indestructible ABS plastic, which comes in two major types and in a range of sizes. In addition to Bahtinov masks for telescopes, Farpoint also makes Bahtinov masks for DSLR camera lenses.\u003c\/p\u003e","brand":"Farpoint","offers":[{"title":"2.5\" to 4.5\" Telescopes","offer_id":44967488094493,"sku":"FAP-FP400","price":18.0,"currency_code":"CAD","in_stock":false},{"title":"3.5\" to 6.5\" Telescopes","offer_id":44967488127261,"sku":"FAP-FP401","price":20.0,"currency_code":"CAD","in_stock":false},{"title":"5.5\" to 8.5\" Telescopes","offer_id":44967488160029,"sku":"FAP-FP402","price":24.0,"currency_code":"CAD","in_stock":false},{"title":"6.5\" to 9.5\" Telescopes","offer_id":44967488192797,"sku":"FAP-FP403","price":26.0,"currency_code":"CAD","in_stock":true},{"title":"8.5\" to 10.5\" Telescopes","offer_id":44967488225565,"sku":"FAP-FP404","price":27.0,"currency_code":"CAD","in_stock":true},{"title":"8.5\" to 11.5\" Telescopes","offer_id":44967488258333,"sku":"FAP-FP405","price":30.0,"currency_code":"CAD","in_stock":true},{"title":"9.5\" to 12\" Telescopes","offer_id":44967488291101,"sku":"FAP-FP406","price":32.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Farpoint-Bahtinov-Focusing-Mask-Universal-from-2-5-inch-to-10-5-inch-1__24582.1597638197.1280.1280.jpg?v=1684342824"},{"product_id":"farpoint-bahtinov-focusing-mask-celestron","title":"Farpoint Bahtinov Focusing Mask - Celestron","description":"\u003c!-- more --\u003e\u003cp\u003eFarpoint Bahtinov Focus Mask is an ingenious new way to easily focus a telescope.  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.\u003c\/p\u003e\u003cp\u003eAdjustable Bahtinov Focus Mask.\u003c\/p\u003e\u003cp\u003eAttach a camera to the telescope, center a fairly bright star and achieve rough focus. Then place the mask over the front aperture of your telescope by “hanging” it on the plastic screws from the front dew shield. Take a short exposure. The image of the star will show diffraction spikes. The “center” set will most likely be shifted to one side or the other. This is showing the defocus.\u003c\/p\u003e\u003cp\u003eAdjust the focus of the telescope and re-expose the star, once again showing the diffraction spike pattern. Iterate the process until the central diffraction spike is centered against the star and the other spikes. When a symmetrical pattern is achieved, the best possible focus is then reached.  Simply remove the mask, center the target object and take amazing, sharp images!\u003c\/p\u003e\u003cp\u003eFarpoint manufactures this “lifesaving” astrophotography tool out of virtually indestructible ABS plastic, which comes in two major types and in a range of sizes. In addition to Bahtinov masks for telescopes, Farpoint also makes Bahtinov masks for DSLR camera lenses.\u003c\/p\u003e\u003ch3\u003eNOTE\u003c\/h3\u003e\u003cp\u003e\u003cspan\u003eThe versions for Hyperstar or Fastar do NOT fit with the Hyperstar or Fastar camera installed. \u003c\/span\u003e\u003cspan\u003eBut if you look carefully, you will see a slit that goes almost all the way across one side. Just complete that slit and you can flex (twist) the mask to open it up to get around the camera.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e","brand":"Farpoint","offers":[{"title":"Celestron 6 SCT","offer_id":44967488389405,"sku":"FAP-FP409","price":32.0,"currency_code":"CAD","in_stock":true},{"title":"Celestron 8 Classic (For Pre-2008 C8 Telescopes)","offer_id":44967488422173,"sku":"FAP-FP410","price":37.0,"currency_code":"CAD","in_stock":false},{"title":"RASA 8","offer_id":44967488454941,"sku":"FAP-FP410-RASA","price":37.0,"currency_code":"CAD","in_stock":false},{"title":"Celestron 8 SCT (Hyperstar\/Fastar Ready Telescopes)","offer_id":44967488487709,"sku":"FAP-FP410H","price":37.0,"currency_code":"CAD","in_stock":false},{"title":"Celestron 11 Classic","offer_id":44967488520477,"sku":"FAP-FP412","price":46.0,"currency_code":"CAD","in_stock":false},{"title":"Celestron 11 SCT (Hyperstar\/Fastar Ready Telescopes)","offer_id":44967488553245,"sku":"FAP-FP412H","price":46.0,"currency_code":"CAD","in_stock":false},{"title":"Celestron 9.25 Classic","offer_id":44967488586013,"sku":"FAP-FP415","price":43.0,"currency_code":"CAD","in_stock":true},{"title":"Celestron 9.25 SCT (Hyperstar\/Fastar Ready Telescopes)","offer_id":44967488618781,"sku":"FAP-FP415H","price":43.0,"currency_code":"CAD","in_stock":false},{"title":"Celestron 14 SCT (Hyperstar\/Fastar Ready Telescopes)","offer_id":44967488651549,"sku":"FAP-FP418H","price":74.0,"currency_code":"CAD","in_stock":true},{"title":"RASA 11","offer_id":44967488684317,"sku":"FAP-FP412R","price":46.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Farpoint-Bahtinov-Focusing-Mask-Celestron-1__21795.1597638198.1280.1280.jpg?v=1684342833"},{"product_id":"farpoint-bahtinov-focusing-mask-meade","title":"Farpoint Bahtinov Focusing Mask - Meade","description":"\u003c!-- more --\u003e\u003cdiv\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cp\u003eFarpoint Bahtinov Focus Mask is an ingenious new way to easily focus a telescope.  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.\u003c\/p\u003e\n\u003cp\u003eAttach a camera to the telescope, center a fairly bright star and achieve rough focus. Then place the mask over the front aperture of your telescope by “hanging” it on the plastic screws from the front dew shield. Take a short exposure. The image of the star will show diffraction spikes. The “center” set will most likely be shifted to one side or the other. This is showing the defocus.\u003c\/p\u003e\n\u003cp\u003eAdjust the focus of the telescope and re-expose the star, once again showing the diffraction spike pattern. Iterate the process until the central diffraction spike is centered against the star and the other spikes. When a symmetrical pattern is achieved, the best possible focus is then reached.  Simply remove the mask, center the target object and take amazing, sharp images!\u003c\/p\u003e\n\u003cp\u003eFarpoint manufactures this “lifesaving” astrophotography tool out of virtually indestructible ABS plastic, which comes in two major types and in a range of sizes. In addition to Bahtinov masks for telescopes, Farpoint also makes Bahtinov masks for DSLR camera lenses.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Farpoint","offers":[{"title":"Meade ASA 8\"","offer_id":44967488880925,"sku":"FAP-FP396","price":40.0,"currency_code":"CAD","in_stock":false},{"title":"Meade ASA10","offer_id":44967488913693,"sku":"FAP-FP397","price":46.0,"currency_code":"CAD","in_stock":true},{"title":"Meade SN10","offer_id":44967488946461,"sku":"FAP-FP416","price":46.0,"currency_code":"CAD","in_stock":true},{"title":"Meade 8\" SCT","offer_id":44967488979229,"sku":"FAP-FP411","price":37.0,"currency_code":"CAD","in_stock":true},{"title":"Meade 10\" SCT","offer_id":44967489011997,"sku":"FAP-FP413","price":48.0,"currency_code":"CAD","in_stock":true},{"title":"Meade 12\" SCT","offer_id":44967489044765,"sku":"FAP-FP414","price":55.0,"currency_code":"CAD","in_stock":true},{"title":"Meade 12\" LX850","offer_id":44967489077533,"sku":"FAP-FP417","price":55.0,"currency_code":"CAD","in_stock":true},{"title":"Meade 14\" SCT","offer_id":44967489110301,"sku":"FAP-FP420","price":74.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Farpoint-Bahtinov-Focusing-Mask-Meade-ASA10-1__67793.1597638200.1280.1280.jpg?v=1684342843"},{"product_id":"farpoint-camera-filter-bahtinov-focus-mask-52-82mm","title":"Farpoint Camera Filter Bahtinov Focus Mask - 52-82mm","description":"\u003c!-- more --\u003e\u003cp\u003eFarpoint 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.\u003c\/p\u003e\u003cp\u003eThis Bahtinov Focus Mask snaps-in to your camera lenses that have filter threads.\u003c\/p\u003e\u003cp\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.\u003c\/p\u003e\u003cp\u003e(Don’t confuse focal length and camera lens size).\u003c\/p\u003e\u003cp\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.\u003c\/p\u003e","brand":"Farpoint","offers":[{"title":"52mm","offer_id":44967491305757,"sku":"FAP-FP438","price":25.0,"currency_code":"CAD","in_stock":true},{"title":"58mm","offer_id":44967491338525,"sku":"FAP-FP439","price":25.0,"currency_code":"CAD","in_stock":false},{"title":"62mm","offer_id":44967491371293,"sku":"FAP-FP440","price":25.0,"currency_code":"CAD","in_stock":true},{"title":"67mm","offer_id":44967491404061,"sku":"FAP-FP441","price":25.0,"currency_code":"CAD","in_stock":false},{"title":"72mm","offer_id":44967491436829,"sku":"FAP-FP442","price":25.0,"currency_code":"CAD","in_stock":true},{"title":"77mm","offer_id":44967491469597,"sku":"FAP-FP443","price":25.0,"currency_code":"CAD","in_stock":false},{"title":"82mm","offer_id":44967491502365,"sku":"FAP-FP444","price":25.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Farpoint-Camera-Filter-Bahtinov-Focus-Mask-52-82mm-1__88293.1597638202.1280.1280.jpg?v=1684342870"},{"product_id":"farpoint-camera-filter-bahtinov-focus-mask-cokin","title":"Farpoint Camera Filter Bahtinov Focus Mask - Cokin","description":"\u003c!-- more --\u003e\u003cp\u003eFarpoint Cokin 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.\u003c\/p\u003e\u003cp\u003eThis Bahtinov Focus Mask mounts on to a Cokin P camera filter cell.\u003c\/p\u003e\u003cp\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.\u003c\/p\u003e\u003cp\u003e(Don’t confuse focal length and camera lens size).\u003c\/p\u003e\u003cp\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.\u003c\/p\u003e","brand":"Farpoint","offers":[{"title":"Cokin P","offer_id":44967491567901,"sku":"FAP-FP475","price":25.0,"currency_code":"CAD","in_stock":true},{"title":"Cokin Z","offer_id":44967491600669,"sku":"FAP-FP476","price":25.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Farpoint-Camera-Filter-Bahtinov-Focus-Mask-Cokin-1__68262.1597638203.1280.1280.jpg?v=1684342873"},{"product_id":"farpoint-tri-bahtinov-focusing-mask-celestron","title":"Farpoint Tri-Bahtinov Focusing Mask - Celestron","description":"\u003c!-- more --\u003e\u003cp\u003e\u003cspan\u003eThe Tri-Bahtinov Mask is an advanced version of the Bahtinov mask that allows for even more precise adjustments and can also be used as a collimation tool.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eIt does NOT fit with the Hyperstar or Fastar camera installed. \u003c\/span\u003e\u003cspan\u003eBut if you look carefully, you will see a slit that goes almost all the way across one side. Just complete that slit and you can flex (twist) the mask to open it up to get around the camera.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eTri-Bahtinov Focus and Collimation Mask is an ingenious new way to easily focus a telescope. 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.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe Bahtinov will produce Cross-shaped stars, with one clear line that moves along the cross as you focus. When the line is centered on the cross, you should have achieved perfect focus.\u003c\/span\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat is the Tri-Bahtinov?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cbr\u003e\u003cspan\u003eIt essentially three Bahtinov masks in one, rotated over 120 degrees. It gives you three lines and three crosses to check collimation, along three axis simultaneously.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eIn addition to focusing, the tri-Bahtinov so also indicates \u003c\/span\u003e\u003cstrong\u003ecollimation\u003c\/strong\u003e\u003cspan\u003e status along three axis.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThis is interesting for e.g. \u003c\/span\u003e\u003cem\u003eSchmidt-Cassegrain telescopes\u003c\/em\u003e\u003cspan\u003e, where the collimation is done by push-pull screws of the secondary mirror along three axis.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWhen you position the tri-Bahtinov alongside these axis, it will give you insight not only per axis of the focus but also how different these focus points are for each axis.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eBahtinov mask is a less expensive method of getting focus on objects in the night sky compared to a standard motor focuser.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWith the right mask and setup, it’s easy to get crystal clear focus on a star in less than 90 seconds.\u003c\/span\u003e\u003c\/p\u003e","brand":"Farpoint","offers":[{"title":"Celestron 8 Classic (For Pre-2008 C8 Telescopes)","offer_id":44967916831005,"sku":"FAP-FP410T","price":45.0,"currency_code":"CAD","in_stock":false},{"title":"Celestron 8 SCT (Hyperstar\/Fastar)","offer_id":44967916863773,"sku":"FAP-FP410HT","price":45.0,"currency_code":"CAD","in_stock":false},{"title":"Celestron 11 Classic","offer_id":44967916896541,"sku":"FAP-FP412T","price":55.0,"currency_code":"CAD","in_stock":false},{"title":"Celestron 11 SCT (Hyperstar\/Fastar)","offer_id":44967916929309,"sku":"FAP-FP412HT","price":55.0,"currency_code":"CAD","in_stock":false},{"title":"Celestron 9.25 SCT (Hyperstar\/Fastar)","offer_id":44967916962077,"sku":"FAP-FP415HT","price":46.0,"currency_code":"CAD","in_stock":false},{"title":"Celestron 14 SCT (Hyperstar\/Fastar)","offer_id":44967916994845,"sku":"FAP-FP418HT","price":85.0,"currency_code":"CAD","in_stock":false},{"title":"RASA 8","offer_id":44967917027613,"sku":"FAP-FP410RT","price":45.0,"currency_code":"CAD","in_stock":true},{"title":"RASA 11","offer_id":44967917060381,"sku":"FAP-FP412RT","price":55.0,"currency_code":"CAD","in_stock":true},{"title":"RASA 14","offer_id":44967917093149,"sku":"FAP-FP418RT","price":91.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Farpoint-Tri-Bahtinov-Mask-Celestron-RASA-8-FP410RT__39787.1631887744.1280.1280.jpg?v=1684347010"},{"product_id":"farpoint-tri-bahtinov-focusing-mask-meade","title":"Farpoint Tri-Bahtinov Focusing Mask - Meade","description":"\u003c!-- more --\u003e\u003cp\u003e\u003cspan\u003eThe Tri-Bahtinov Mask is an advanced version of the Bahtinov mask that allows for even more precise adjustments and can also be used as a collimation tool.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eIt does NOT fit with the Hyperstar or Fastar camera installed. \u003c\/span\u003e\u003cspan\u003eBut if you look carefully, you will see a slit that goes almost all the way across one side. Just complete that slit and you can flex (twist) the mask to open it up to get around the camera.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eTri-Bahtinov Focus and Collimation Mask is an ingenious new way to easily focus a telescope. 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.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe Bahtinov will produce Cross-shaped stars, with one clear line that moves along the cross as you focus. When the line is centered on the cross, you should have achieved perfect focus.\u003c\/span\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat is the Tri-Bahtinov?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cbr\u003e\u003cspan\u003eIt essentially three Bahtinov masks in one, rotated over 120 degrees. It gives you three lines and three crosses to check collimation, along three axis simultaneously.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eIn addition to focusing, the tri-Bahtinov so also indicates \u003c\/span\u003e\u003cstrong\u003ecollimation\u003c\/strong\u003e\u003cspan\u003e status along three axis.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThis is interesting for e.g. \u003c\/span\u003e\u003cem\u003eSchmidt-Cassegrain telescopes\u003c\/em\u003e\u003cspan\u003e, where the collimation is done by push-pull screws of the secondary mirror along three axis.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWhen you position the tri-Bahtinov alongside these axis, it will give you insight not only per axis of the focus but also how different these focus points are for each axis.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eBahtinov mask is a less expensive method of getting focus on objects in the night sky compared to a standard motor focuser.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWith the right mask and setup, it’s easy to get crystal clear focus on a star in less than 90 seconds.\u003c\/span\u003e\u003c\/p\u003e","brand":"Farpoint","offers":[{"title":"Meade 8\" SCT","offer_id":44967917224221,"sku":"FAP-FP411T","price":46.0,"currency_code":"CAD","in_stock":true},{"title":"Meade 10\" SCT","offer_id":44967917256989,"sku":"FAP-FP413T","price":55.0,"currency_code":"CAD","in_stock":false},{"title":"Meade 12\" SCT","offer_id":44967917289757,"sku":"FAP-FP414T","price":66.0,"currency_code":"CAD","in_stock":true},{"title":"Meade 12\" LX850","offer_id":44967917322525,"sku":"FAP-FP417T","price":66.0,"currency_code":"CAD","in_stock":true},{"title":"Meade 14\" SCT","offer_id":44967917355293,"sku":"FAP-FP420T","price":85.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Farpoint-Tri-Bahtinov-Mask-Meade-14-FP420T__75546.1631888046.1280.1280.jpg?v=1684347012"}],"url":"https:\/\/davidastro.com\/collections\/farpoint-imaging-accessories.oembed","provider":"David Astro","version":"1.0","type":"link"}