{"product_id":"celestron-riduttore-focale-0-7x-edge-hd-1400","title":"Celestron 0.7x Focal Reducer for Edge HD 1400","description":"\u003cp\u003e\u003cstrong\u003eThe Celestron 0.7x focal reducer for Edge HD 1400\u003c\/strong\u003e (item 94240) is the official optical accessory that brings the EdgeHD system from f\/10 to \u003cstrong\u003ef\/7\u003c\/strong\u003e, halving exposure times and widening the field of view by 43%. Designed with 5-element optics in \u003cstrong\u003elanthanum and rare-earth glass\u003c\/strong\u003e, it preserves the characteristic flat-field correction of the Edge HD system, delivering pinpoint stars from the center to the edge of the sensor — ideal for imaging nebulae, galaxies and clusters with cooled CMOS cameras or modified DSLRs on sensors up to APS-C format.\u003c\/p\u003e\n\n\u003ch2\u003eOptical design dedicated to the Edge HD 1400\u003c\/h2\u003e\n\u003cp\u003eUnlike generic focal reducers, this accessory is calculated specifically for the Edge HD 1400 optics and preserves its \u003cstrong\u003e105 mm backfocus\u003c\/strong\u003e, maintaining compatibility with original Celestron T-Adapters and all dedicated imaging accessories. The \u003cstrong\u003eCNC-machined aluminum housing\u003c\/strong\u003e ensures precise spacing, alignment and centering of the optical elements. All lens edges are blackened to eliminate internal reflections and maximize contrast.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eParameter\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eOptical design\u003c\/td\u003e\u003ctd\u003e5-element reducer\/flattener\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eReduction factor\u003c\/td\u003e\u003ctd\u003e0.7x\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eResulting focal ratio\u003c\/td\u003e\u003ctd\u003ef\/7 (from f\/10)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOptimal backfocus\u003c\/td\u003e\u003ctd\u003e105 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eThread\u003c\/td\u003e\u003ctd\u003e3.3\" male\/female on both sides\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOptical coating\u003c\/td\u003e\u003ctd\u003eBroadband multi-coating\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOptical glass\u003c\/td\u003e\u003ctd\u003eLanthanum and rare-earth, high index\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eExposure time reduction\u003c\/td\u003e\u003ctd\u003e50% (1-stop gain)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eField of view increase\u003c\/td\u003e\u003ctd\u003e43%\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCompatibility\u003c\/td\u003e\u003ctd\u003eCelestron Edge HD 1400 exclusively\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eItem code\u003c\/td\u003e\u003ctd\u003eCSCE94240\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eInstallation and compatibility\u003c\/h2\u003e\n\u003cp\u003eThe reducer screws directly onto the \u003cstrong\u003e3.3\" rear threaded port of the Edge HD 1400\u003c\/strong\u003e tube. The large aperture diameter reduces mechanical vignetting and makes the system compatible with \u003cstrong\u003eAPS-C sensors\u003c\/strong\u003e and off-axis guiding systems (OAG). Completing the imaging setup requires the specific photo adapter for EdgeHD 1400 (not included).\u003c\/p\u003e\n\n\u003ch2\u003eCompatibility note\u003c\/h2\u003e\n\u003cp\u003eThe Celestron 94240 reducer is designed \u003cstrong\u003eexclusively\u003c\/strong\u003e for the Edge HD 1400 telescope. It is not optically compatible with the standard C14 nor with other Schmidt-Cassegrain or Cassegrain telescopes of different aperture or optical design.\u003c\/p\u003e\n\n\u003ch2\u003eWho it's for\u003c\/h2\u003e\n\u003cp\u003eIdeal for astrophotographers using the Celestron Edge HD 1400 who want a faster, brighter system with a wider field, without giving up the flat-field correction that distinguishes the Edge HD line. Compatible with ZWO ASI, QHY, Player One cameras and modified DSLRs.\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":57945440026955,"sku":"CSCE94240","price":1326.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/94240.jpg?v=1785050451","url":"https:\/\/adriasky.it\/en\/products\/celestron-focal-reducer-0-7x-edge-hd-1400","provider":"Adriasky","version":"1.0","type":"link"}