![]() ![]() A rubber grip ring on the body allows for easy installation of the reducer on your scope, even when you are wearing gloves. The reducer/corrector is supplied with full instructions and with plastic dust caps for both sides of the lens assembly. When used for astrophotography, it reduces exposure times by a factor of 3, with an actual field diameter of 1.5" at the film plane. ![]() The reducer/corrector converts the f/10 focal ratio of Celestron C5, C8, C9¼, and C11 telescopes (and all Meade 8" and larger f/10 telescopes) to f/6.3. The reducer/corrector duplicates the rear cell thread of the telescope, allowing you to attach all standard rear cell visual and photographic accessories. ![]() It threads onto the rear cell of 5" to 16" Celestron and Meade Schmidt-Cassegrain telescopes, making it possible to have a dual focal ratio instrument without sacrificing image quality. A f/10 focal ratio now achieves a f/6.3, while an f/11 focal ratio now achieves a f/7. This combination focal reducer and field flattener consists of a four-element multicoated 41mm lens in a metal cell. Explicitly designed for Celestron Schmidt-Cassegrain telescopes, this unique lens reduces your telescope’s focal length and f/ ratio by 37, turning your long focal length telescope into a fast, short focal length instrument.
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