{"product_id":"celestron-11-rowe-ackermann-schmidt-astrografo-rasa-11","title":"Celestron 11\" Rowe-Ackermann Schmidt Astrograph (RASA 11)","description":"\u003ch2\u003eRowe-Ackermann Schmidt Astrograph RASA 11\" V2, f\/2.2 (Optical Tube Only)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eCelestron RASA 11\" V2\u003c\/strong\u003e places the imaging sensor at the front of the tube, creating an ultra-fast \u003cstrong\u003ef\/2.2\u003c\/strong\u003e system with an extremely wide field of view. This design allows for much shorter exposure times than a traditional f\/10 system without sacrificing resolution: in many cases autoguiding isn't even needed.\u003c\/p\u003e\u003cp\u003eThe 4-element low-dispersion glass optical group eliminates false colour, coma and field curvature, with an \u003cstrong\u003eoptimised 43.3mm image circle\u003c\/strong\u003e that keeps pinpoint stars right into the corners of the largest sensors. The new \u003cstrong\u003eUltra-Stable Focus System (USFS)\u003c\/strong\u003e, built around a precision linear bearing, minimises focus shift and mirror flop. An integrated \u003cstrong\u003e12V MagLev fan\u003c\/strong\u003e reduces cooldown time and ensures optimal airflow through the dust-filtered tube. Includes 42mm T-thread and 48mm M48 camera adapters for direct attachment to CCD and DSLR cameras.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\u003cthead\u003e\u003ctr\u003e\u003cth\u003eFeature\u003c\/th\u003e\u003cth\u003eDetail\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003eOptical design\u003c\/td\u003e\u003ctd\u003eRowe-Ackermann Schmidt Astrograph\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eAperture\u003c\/td\u003e\u003ctd\u003e279 mm (11\")\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eFocal length\u003c\/td\u003e\u003ctd\u003e620 mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eFocal ratio\u003c\/td\u003e\u003ctd\u003ef\/2.2\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eOptimised image circle\u003c\/td\u003e\u003ctd\u003e43.3 mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eUsable field\u003c\/td\u003e\u003ctd\u003e52 mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eOptical coating\u003c\/td\u003e\u003ctd\u003eStarBright XLT\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eFocusing\u003c\/td\u003e\u003ctd\u003eUltra-Stable Focus System (USFS)\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eCooling\u003c\/td\u003e\u003ctd\u003e12V DC MagLev fan\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eTube material\u003c\/td\u003e\u003ctd\u003eAluminium\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eOptical tube weight\u003c\/td\u003e\u003ctd\u003e19.5 kg\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eDovetail\u003c\/td\u003e\u003ctd\u003eDual CGE dovetail\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eWhat's Included\u003c\/h2\u003e\u003cul\u003e\u003cli\u003eRASA 11\" V2 optical tube with dual CGE dovetail\u003c\/li\u003e\u003cli\u003e42mm T-thread camera adapter\u003c\/li\u003e\u003cli\u003e48mm M48 camera adapter\u003c\/li\u003e\u003cli\u003eDust cover\u003c\/li\u003e\u003cli\u003eFan battery pack\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eNote: instrument dedicated exclusively to imaging, not usable for visual observation (no eyepiece port provided).\u003c\/em\u003e\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default","offer_id":58015043387723,"sku":"CSCE91076","price":4769.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/celestron-rasa-11-astrografo-01.jpg?v=1785658489","url":"https:\/\/adriasky.it\/en\/products\/celestron-11-rowe-ackermann-schmidt-astrografo-rasa-11","provider":"Adriasky","version":"1.0","type":"link"}