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| This focal reducer and field flattener consists of a four-element multicoated 40mm lens in a metal cell. 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. The reducer/corrector duplicates the rear cell thread of the telescope, allowing you to attach all standard rear cell visual and photographic accessories to the reducer. 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 f/11 C14 telescope becomes an f/7. 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. A rubber grip ring on the body allows for easy installation of the made-in-Canada reducer/corrector on your scope, even when you are wearing gloves.
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Terms of Sale | PRIVACY POLICY 7/1/2004 | Fine Print
Toll-Free Telephone Astronomics: 800-422-7876; Christophers, Ltd.: 800-356-6603
Alternate Telephone: 405-364-0858 24 Hour Fax Line: 405-447-3337
Telephone Hours: Monday-Friday 8 AM - 9 PM CST
Saturday Noon - 5 PM CST
Store Hours: Monday-Friday 9 AM - 5 PM CST
Saturday Noon - 5 PM CST
Astronomics / Christophers, Ltd.
680 S.W. 24th Ave.
Norman, OK, 73069
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