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Astronomy Technologies - Astro-Tech 35mm extension tube
| In Stock: | Usually ships within one business day. |
| This Astro-Tech 35mm extension tube is used to make up for the loss of light path when a 2” star diagonal is removed from many refractor focusers and replaced by a camera and camera adapter for imaging. It can also be used with Astro-Tech Ritchey-Chrétien reflectors to bring webcams and DSLRs to the correct focus . . .
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Astronomy Technologies - Astro-Tech 50mm extension tube
| Back-Ordered: | Temporarily out of stock; will charge and ship when available. |
| This Astro-Tech 50mm extension tube is used to make up for the loss of light path when a 2” star diagonal is removed from many refractor focusers and replaced by a camera and camera adapter for imaging. It can also be used with Astro-Tech Ritchey-Chrétien reflectors to bring webcams and DSLRs to the correct focus . . .
[ More details . . . ]
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Astronomy Technologies - Astro-Tech 80mm extension tube
| In Stock: | Usually ships within one business day. |
| This Astro-Tech 80mm extension tube is used to make up for the loss of light path when a 2” star diagonal is removed from many refractor focusers and replaced by a camera and camera adapter for imaging. It can also be used with Astro-Tech Ritchey-Chrétien reflectors to bring webcams and DSLRs to the correct focus . . .
[ More details . . . ]
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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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