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| This full aperture filter has a 90mm/3.5" clear aperture Type 2+ glass filter element. It’s mounted in an aluminum cell with a 108mm/4.25" internal diameter to fit scopes with a maximum diameter of 106.4mm (4-3/16"). It fits all versions of the unarmored Celestron C90, Meade ETX-90, and Questar Standard and Duplex 3.5" Maksutov-Cassegrain telescopes, as well as the Astro-Tech AT80 and AT80ED 3.1" refractors. You can custom fit it to telescope tubes with an O.D. of 101.6mm (4") to 106.4mm (4-3/16") by using the extra supplied self-adhesive felt. Always remember to install the solar filter before pointing your telescope at the Sun to avoid instant and irreversible damage to your eyesight.
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| Customers who bought this item also bought these items:
- Celestron - 18% transmission green 1.25" Moon filter
- Meade - Filter set #1 – #12, 23A, 58, and 80A
- Meade - Filter set #2 – #11, 25A, 47, and 82A
- Meade - Filter set #3 – #8, 21, 38A, and 56
- Thousand Oaks - full aperture glass filter for Celestron C5, NexStar 5, C4.5, C114; Meade ETX-125; and original Astro-Tech AT111EDT
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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
© 2012 by Ad-Libs Advertising, Inc. All rights reserved
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