{"product_id":"like-new-celestron-dielectric-star-diagonal-1-25-with-twist-lock","title":"Like New Celestron Dielectric Star Diagonal, 1.25” With Twist-Lock","description":"\u003cp\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e: This is a 1.25\" twist-lock dielectric diagonal in perfect, like new condition, with completely clean optics, and no signs of use on the body.  Includes both dust caps, but no box.  This is a bargain at \u003cspan style=\"text-decoration: underline;\"\u003eover HALF-OFF\u003c\/span\u003e and won't last! \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eEnjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings\u003c\/li\u003e\n\u003cli\u003eProvides a 90° viewing angle, perfect for more comfortable viewing through refractor and Cassegrain-type telescopes\u003c\/li\u003e\n\u003cli\u003e58 layers of dielectric coatings provide an over 99% reflective surface, ensuring the maximum amount of light collected by the telescope reaches the eyepiece\u003c\/li\u003e\n\u003cli\u003eTwist-lock keeps the eyepiece centered in the diagonal to provide better optical alignment\u003c\/li\u003e\n\u003cli\u003eAccepts standard eyepieces, Barlow lenses, threaded filters, and other accessories with a 1.25” barrel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\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\u003cstrong\u003eStandard Star Diagonals vs Dielectric Star Diagonal\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\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\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable class=\"table-open\" id=\"product-specs-list\"\u003e\n\u003ctbody id=\"spec-block-1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagonal size\u003c\/td\u003e\n\u003ctd\u003e31.75mm (1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagonal type\u003c\/td\u003e\n\u003ctd\u003eMirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass material\u003c\/td\u003e\n\u003ctd\u003eBK7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eDielectric, 58 layers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflectivity\u003c\/td\u003e\n\u003ctd\u003eOver 99%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical quality\u003c\/td\u003e\n\u003ctd\u003eDiffraction limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece holder\u003c\/td\u003e\n\u003ctd\u003e1.25\", Twist-Lock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompression ring\u003c\/td\u003e\n\u003ctd\u003eYes, single ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing construction\u003c\/td\u003e\n\u003ctd\u003eMachined aluminum black anodized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel interior\u003c\/td\u003e\n\u003ctd\u003eGlare threaded and painted flat black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreads for filters\u003c\/td\u003e\n\u003ctd\u003eYes, 1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e114.3mm x 50.8mm x 88.9mm (4.5\" x 2\" x 3.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e7.5 oz (212.6 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalifornia Residents\u003c\/td\u003e\n\u003ctd class=\"cali-prop65-warning\"\u003e\u003ca href=\"https:\/\/www.celestron.com\/products\/dielectric-star-diagonal-1-25-with-twist-lock#\"\u003eView Proposition 65 Warning\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":49704251916547,"sku":"U2609-MM-93571","price":70.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1979\/5379\/files\/462566694_886622450025957_5727307402570735521_n.jpg?v=1790376248","url":"https:\/\/milehighastro.com\/products\/like-new-celestron-dielectric-star-diagonal-1-25-with-twist-lock","provider":"Mile High Astronomy","version":"1.0","type":"link"}