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| Unlike a camera lens, a Questar telescope has a fixed focal ratio. This Questar variable polarizing assembly allows you to vary the light transmission of a Questar telescope (similar to the effect of the variable iris in a camera lens) to permit terrestrial and lunar prime focus imaging under a variety of lighting conditions.
The Questar variable polarizing assembly consists of an adapter body containing two 30% transmission polarizing filters. One filter is fixed in position, while a lever in the side of the assembly allows the second filter to be rotated to provide variable glare reduction with a light transmission range of 5% to 30%.
The assembly includes a #13071 swivel coupling at one end that threads into the Cassegrain focus at the rear of your Questar scope. A T-thread adapter at the opposite end of the assembly lets you connect your 35mm or DSLR camera body to the assembly using an o0ptional T-ring. You can also connect a CCD camera body using the T-thread opening in the front plate of most CCD cameras.
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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 8 AM - 6 PM CST
Tuesday-Friday 8 AM - 8 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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