{"product_id":"used-celestron-c11-sct-ota-missing-focus-knob","title":"Used Celestron C11 SCT OTA - missing focus knob","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003eThis is a used C11 OTA with a CGE dovetail.  It is about a dozen years old and in very good condition.  This OTA has Starbright XLT coatings.  Please note that this is the non-Fastar model.  Other than normal dust with age, the optics are clean. \u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003eThis is the OTA only, with just the 1.25\" visual back and an 8x50 finder - no eyepieces or other accessories.  However, it does come with a padded case.  \u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e \u003c\/div\u003e\n11\" Schmidt-Cassegrain Optical Tube Assembly\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eAluminum Optical Tube\u003c\/li\u003e\n\u003cli\u003eCelestron's premium StarBright XLT coatings\u003c\/li\u003e\n\u003cli\u003e2800 mm focal length (f\/10)\u003c\/li\u003e\n\u003cli\u003eVisual back allows for use with 1.25\" accessories\u003c\/li\u003e\n\u003cli\u003e8x50 finderscope\u003c\/li\u003e\n\u003cli\u003eIncludes dovetail rail compatible with CGE mount\u003c\/li\u003e\n\u003cli\u003eIncludes padded case \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003ctable class=\"table-open\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture (mm)\u003c\/td\u003e\n\u003ctd\u003e279.4 mm (11 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail Compatibility\u003c\/td\u003e\n\u003ctd\u003eCGE Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e2800 mm (110 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHighest Useful Magnification\u003c\/td\u003e\n\u003ctd\u003e660 x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Gathering Power (Comp...\u003c\/td\u003e\n\u003ctd\u003e1593 x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLimiting Stellar Magnitude\u003c\/td\u003e\n\u003ctd\u003e14.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLowest Useful Magnification\u003c\/td\u003e\n\u003ctd\u003e40 x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Coatings\u003c\/td\u003e\n\u003ctd\u003eStarBright \/ XLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eSchmidt-Cassegrain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube\u003c\/td\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Length\u003c\/td\u003e\n\u003ctd\u003e24 in (610 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Weight\u003c\/td\u003e\n\u003ctd\u003e27.5 lbs (12 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution (Dawes)\u003c\/td\u003e\n\u003ctd\u003e0.42 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution (Rayleigh)\u003c\/td\u003e\n\u003ctd\u003e0.5 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Obstructio...\u003c\/td\u003e\n\u003ctd\u003e12%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Obstruction\u003c\/td\u003e\n\u003ctd\u003e3.75 in (95 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":49922984247555,"sku":"U2610-AR-91036","price":750.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/milehighastro.com\/products\/used-celestron-c11-sct-ota-missing-focus-knob","provider":"Mile High Astronomy","version":"1.0","type":"link"}