{"title":"Diagonals \u0026 Prisms","description":"\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\" data-mce-style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0424\/5104\/2453\/files\/Diagonals_Prisims.jpg?v=1601497017\" alt=\"\" style=\"float: none;\" data-mce-fragment=\"1\" data-mce-style=\"float: none;\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0424\/5104\/2453\/files\/Diagonals_Prisims.jpg?v=1601497017\"\u003e\u003c\/div\u003e","products":[{"product_id":"2-dielectric-mirror-diagonal-twistlock","title":"2\" Dielectric Mirror Diagonal, TwistLock","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cdiv\u003eEnsure maximum light transmission without loss of optical quality with the Celestron Dielectric Star Diagonal, 2” with Twist-Lock. Upgrade your existing star diagonal to this premium one and enjoy brighter, sharper images without purchasing an entirely new telescope. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThis star diagonal reflects the telescope’s light path 90° to provide a more comfortable viewing angle. In addition, the glass has 58 layers of dielectric coatings, which provide an over 99% reflective surface, delivering the maximum amount of light to the eyepiece. This 2” star diagonal has the added benefit of allowing you to use larger 2” eyepieces with your telescope, providing a wider field of view, or standard 1.25” eyepieces with the stepdown adapter. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe twist-lock eyepiece holder secures eyepieces while keeping them centered in the diagonal, thus providing best opto-mechanical alignment between the telescope and eyepiece. Unlike traditional thumb screws, the twist-lock cannot scratch or engrave the barrel of your eyepieces. The diagonal has an integrated 2” barrel stop that prevents 2” accessories with long barrels from damaging the mirror. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eAll the diagonal’s mechanical parts are made of machined black anodized aluminum, except the twist lock rings, which are orange anodized for visibility. The interior of the Schmidt-Cassegrain adapter and 2” barrel are glare threaded and painted flat black to prevent glare. With all its features and these high-end finishes, the Celestron Dielectric Star Diagonal, 2” with Twist-Lock is one of the highest quality 2\" star diagonals that Celestron has ever offered.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThis diagonal also comes with two interchangeable barrels to provide flexibility in connecting the diagonal to a wide variety of telescopes without the need for additional adapters. For telescopes, like refractors, which accept 2” barrels in their focuser, a standard 2” barrel is included. For Schmidt-Cassegrains (SCTs) that use a threaded connection to the focuser, a barrel with SCT threads is included. Both barrels thread onto the diagonal housing, providing a secure connection to the diagonal.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eStandard Star Diagonals vs Dielectric Star Diagonal\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe key specifications for a star diagonal are its reflectivity and its optical quality. This diagonal delivers top performance in both categories, with an over 99% reflective mirror and diffraction-limited optical quality. This ensures that virtually all the light collected by the telescope will reach the eyepiece without the diagonal affecting optical performance. Using a lower quality star diagonal can both dim the view and degrade optical quality. You can enjoy better views from your telescope by simply swapping out its diagonal for a premium one, like the Celestron Dielectric Star Diagonal.\u003c\/div\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":35603287638165,"sku":"100020797","price":249.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0424\/5104\/2453\/products\/20797_Twist-Lock_Dielectric_Star_Diagonal_2inch_Clg.jpg?v=1604065559"},{"product_id":"1-25-erect-image-45deg-diagonal","title":"1.25\"  Erect Image 45° Diagonal","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cdiv\u003eDid you know that most telescopes work well for daytime viewing as well as for astronomy? \u003cbr\u003e\u003cbr\u003eIf you have a refractor or a catadioptric telescope (the Schmidt-Cassegrain is the most popular example), and you would like to use it for terrestrial observations, the most useful additional accessory you can buy is an erect-image diagonal.\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eIf you look through your telescope with the standard mirror or star diagonal installed, you will notice that objects may be either upside down, flipped so that you see a mirror image, or a combination of the two. This is fine for observations of celestial objects, but it can be a little confusing when you are trying to track a boat as it moves through the water, or an eagle as he flies towards his perch.\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eLuckily, this is an easy problem to correct. Simply remove the standard diagonal from the telescope’s focuser or visual back, and install the Celestron 45º Erect Image Diagonal. Now, when you insert an eyepiece, objects will be right side up and left-to-right correct. The 45º angle of this Amici prism diagonal is very comfortable for daytime observations, where the telescope is often in a horizontal position.\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003ePlease Note: Adding an erect-image diagonal to a Newtonian reflector will not result in images that are right side up and left-to-right correct. The optical design of a Newtonian will always produce images that are rotationally off in orientation. This does not mean that you can’t use a Newtonian reflector during the day, it just means that you have to get used to objects oriented in unrealistic positions.\u003c\/div\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":35603287670933,"sku":"100020801","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0424\/5104\/2453\/products\/20801-a_diagonal_direct_800.jpg?v=1600971612"},{"product_id":"2-mirror-diagonal-with-xlt","title":"2\" Mirror Diagonal with XLT","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp\u003e\u003cstrong\u003e2\" Mirror Diagonal with XLT Coatings\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003cbr\u003eThere are few telescope accessories that work as hard or matter as much as a diagonal! An integral part of the optical chain, a good diagonal can make a big difference in the quality of the image you see. A 2” diagonal is required if you want to use 2” eyepieces when observing with your telescope. The larger 2” barrel allows you to see a bigger percentage of the telescope’s light cone, which works wonders for capturing faint deep sky objects with low surface brightness.\u003c\/p\u003e\n\u003cp\u003eThe Celestron 2” Mirror Diagonal was built for superior performance. The housing is machined with precision instruments to make sure the optics stay perfectly aligned. The diagonal’s mirror is tested with an interferometer, and is guaranteed to be 1\/10 wave or better. The mirror’s surface is covered with the same high performance XLT coatings used on Celestron’s best telescopes, and the result is a sharp, bright image that will satisfy the most discriminating amateur astronomer.\u003c\/p\u003e\n\u003cp\u003eThis 2” diagonal threads securely to the rear cell of standard Schmidt-Cassegrain telescopes. To take advantage of the XLT Diagonal’s extra light throughput, insert a 2” eyepiece into the barrel. If you want to use 1.25” eyepieces, slide the included 2” to 1.25” adapter into the eyepiece barrel and secure it with the thumbscrew. When you’re not observing, store your diagonal in the included aluminum case for protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e• 2” SCT mirror diagonal with high performance XLT coatings\u003cbr\u003e• 1\/10th wave mirror is tested with an interferometer to ensure quality\u003cbr\u003e• Housing is precision machined to achieve and hold good optical alignment\u003cbr\u003e• Includes a 2” to 1.25” adapter and aluminum carry case\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":35603287605397,"sku":"100020796","price":199.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0424\/5104\/2453\/products\/93527-1_lg.png?v=1600133084"},{"product_id":"sct-to-2-adapter-visual-back","title":"SCT to 2\" Adapter, Visual Back","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp\u003e\u003cstrong\u003eSCT to 2” Adapter\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003cbr\u003eThis sturdy, high-quality adapter provides a solid connection between your Schmidt-Cassegrain or Maksutov-Cassegrain telescope and 2” accessories without any special threaded 2\" diagonal. This accessory makes it possible to maximize your views through your telescope with your standard 2” diagonal, eyepieces, and other accessories (like photo adapters) allowing you to connect a camera for astroimaging.\u003c\/p\u003e\n\u003cp\u003eThe adapter offers an ultra-secure threaded connection to your telescope. On the other side, a brass compression ring provides a strong grip on eyepieces accessories without scratching or denting their barrels. To tighten the ring around the accessory, just adjust the set screw.\u003c\/p\u003e\n\u003cp\u003eWith its precision machined aluminum construction and black anodized finish, this adapter will resist corrosion and wear, providing you with years of use. The black interior also reduces the internal light reflections, enhancing your view.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e• Replace your 1.25” visual back with this SCT to 2” Adapter and enjoy stunning views through 2” eyepieces and other accessories\u003cbr\u003e• Internal threads provide a secure connection to the rear cell of most Schmidt-Cassegrain or Maksutov-Cassegrain telescopes\u003cbr\u003e• Brass compression ring holds 2\" eyepieces or diagonals tightly without scratching their barrels\u003cbr\u003e• Use with photo adapters to attach imaging cameras to the rear of your Schmidt or Maksutov telescope\u003cbr\u003e• Features a durable, anodized black aluminum housing\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":35603287703701,"sku":"100021015","price":26.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0424\/5104\/2453\/products\/93661-1_lg.png?v=1600133166"},{"product_id":"2-diagonal","title":"2\" Diagonal w\/1.25 Adapter","description":"\u003cp\u003e\u003cstrong\u003eExplore Scientific 99% Reflective 2\" Diagonal\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003cbr\u003eThe Explore Scientific 2-inch Dielectric-Coated Diagonal Mirror comes complete with 1.25-inch Adapter and dust covers. Solid construction and light weight, this first surface coated diagonal mirror reflects 99% of the light to help maintain the brightest possible image from your telescope.\u003c\/p\u003e\n\u003cp\u003eThe insert barrel is a double taper, so it can be smoothly inserted or withdrawn from the focuser. The wide part of the taper prevents the diagonal from accidentally falling out of the focuser if the set screw loosens up. Eyepieces are secured in the diagonal with a compression ring lock on both the two-inch eyepiece holder and the 1.25-inch eyepiece holder.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":35603659194517,"sku":"100021298","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0424\/5104\/2453\/products\/DD02-00CF-1_lg.png?v=1600137742"},{"product_id":"dielecric-star-diagonal-1-25-with-twist-lock","title":"1.25\" Dielecric Star Diagonal,  with Twist Lock","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003ch3\u003e\u003cspan\u003eCelestron Dielecric Star Diagonal, 1.25\" with Twist Lock\u003c\/span\u003e\u003c\/h3\u003e\n\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003cbr\u003e\n\u003cp\u003eEnsure maximum light transmission without loss of optical quality with the Celestron Dielectric Star Diagonal, 1.25” with Twist-Lock. Upgrade your existing star diagonal to this premium one and enjoy brighter, sharper images without replacing your telescope.\u003c\/p\u003e\n\u003cp\u003eThis star diagonal reflects the telescope’s light path 90° to provide a more comfortable viewing angle. In addition, the glass has 58 layers of dielectric coatings, which provide an over 99% reflective surface, delivering the maximum amount of light to the eyepiece. The twist-lock eyepiece holder secures any 1.25” eyepieces while keeping them centered in the diagonal, thus providing best opto-mechanical alignment between the telescope and eyepiece. Unlike traditional thumb screws, the twist-lock cannot scratch or engrave the barrel of your eyepieces. The twist-lock has an integrated 1.25” barrel stop that prevents 1.25” accessories with long barrels from damaging the mirror.\u003c\/p\u003e\n\u003cp\u003eAll the diagonal’s mechanical parts are made of machined black anodized aluminum, except the twist lock rings, which are orange anodized for visibility. The interior of the barrel is glare threaded and painted flat black to prevent glare. With all its features and these high-end finishes, the Celestron Dielectric Star Diagonal, 1.25” with Twist-Lock is one of the highest quality 1.25\" star diagonals that Celestron has ever offered.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eStandard Star Diagonals vs Dielectric Star Diagonal\u003c\/span\u003e\u003cbr\u003eThe key specifications for a star diagonal are its reflectivity and its optical quality. This diagonal delivers top performance in both categories, with an over 99% reflective mirror and diffraction-limited optical quality. This ensures that virtually all the light collected by the telescope will reach the eyepiece without the diagonal affecting optical performance. Using a lower quality star diagonal can both dim the view and degrade optical quality. You can enjoy better views from your telescope by simply swapping out its diagonal for a premium one, like the Celestron Dielectric Star Diagonal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e• Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings\u003cbr\u003e• Provides a 90° viewing angle, perfect for more comfortable viewing through refractor and Cassegrain-type telescopes\u003cbr\u003e• 58 layers of dielectric coatings provide an over 99% reflective surface, ensuring the maximum amount of light collected by the telescope reaches the eyepiece\u003cbr\u003e• Twist-lock keeps the eyepiece centered in the diagonal to provide better optical alignment\u003cbr\u003e• Accepts standard eyepieces, Barlow lenses, threaded filters, and other accessories with a 1.25” barrel\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":36336786112661,"sku":"100021808","price":159.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0424\/5104\/2453\/products\/93571-2_lg.png?v=1604065744"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0424\/5104\/2453\/collections\/Diaginal.png?v=1684171702","url":"https:\/\/www.atlantahobby.com\/collections\/diagonals-prisms\/2-inch.oembed","provider":"Atlanta Hobby","version":"1.0","type":"link"}