{"product_id":"celestron-c90-90mm-f-11-maksutov-original-usa-with-case-t-adaptor-accessories-pre-owned","title":"Celestron C90 90mm f\/11 Maksutov - Original USA - with Case, T-Adaptor \u0026 Accessories (Pre-owned)","description":"\u003ch3 style=\"text-align: left;\"\u003e\u003cspan style=\"color: rgb(248, 18, 18);\"\u003eIn Good Vintage Condition.\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(248, 18, 18);\"\u003e\u003cstrong\u003ePre-owned. Inspected and tested by our technicians. 30-day warranty.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(248, 18, 18);\"\u003eIncludes:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(248, 18, 18);\"\u003eCelestron C90 optical tube, 90mm f\/11 (1000mm), Made in USA\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(248, 18, 18);\"\u003eOriginal Celestron hard carry case with fitted foam\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(248, 18, 18);\"\u003eCelestron T-Adaptor-C90 (camera T-ring not included)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(248, 18, 18);\"\u003eCelestron K 18mm Kellner eyepiece (0.965\")\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(248, 18, 18);\"\u003e0.965\" star diagonal\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(248, 18, 18);\"\u003eFinderscope with bracket, Made in Japan\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(248, 18, 18);\"\u003eNote: Can be modified to work with 1.25\" Eyepieces with a hybrid diagonal or adaptor.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCondition notes:\u003c\/strong\u003e Optics clean. Light scuffing on the gold Celestron band and normal wear to the wrinkle-finish paint and case, consistent with age. See photos.\u003c\/p\u003e\n\u003ch3\u003eAbout the Original Celestron C90\u003c\/h3\u003e\n\u003cp\u003eIntroduced in the late 1970s at around  the C90 was the entry point to Celestron's catadioptric line alongside the C5, C8, C11 and C14. Unlike those Schmidt-Cassegrains, the C90 is a Maksutov-Cassegrain, giving sharp, high-contrast views in a very short, all-metal tube.\u003c\/p\u003e\n\u003cp\u003eThis is the original USA-made version, not the later Chinese-made reissue. Focus is by rotating the knurled barrel, like a telephoto lens.\u003c\/p\u003e\n\u003ch3\u003eTwo Instruments in One\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTelescope:\u003c\/strong\u003e Fit the diagonal and eyepiece for the Moon, planets, double stars and terrestrial viewing. The 18mm Kellner gives about 56x.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1000mm f\/11 Mirror Lens:\u003c\/strong\u003e Add a T-ring for your camera body to the included T-Adaptor and the C90 becomes a compact 1000mm telephoto for the Moon, wildlife and distant subjects.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eMaksutov-Cassegrain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e90 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1000 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eRotating barrel (helical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Size\u003c\/td\u003e\n\u003ctd\u003e0.965\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection\u003c\/td\u003e\n\u003ctd\u003eT-Adaptor-C90 (T-thread); camera T-ring required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Manufacture\u003c\/td\u003e\n\u003ctd\u003eUSA (optical tube); finderscope Japan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":67714210824305,"sku":"USED101702","price":224.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/celestron-c90-usa-used-01.jpg?v=1792255027","url":"https:\/\/khanscope.com\/fr-fr\/products\/celestron-c90-90mm-f-11-maksutov-original-usa-with-case-t-adaptor-accessories-pre-owned","provider":"Khan Scope Centre","version":"1.0","type":"link"}