Astro-Tech R-C Imaging Extension Tubes

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Accessories / Photographic / Camera Adapters – 35mm, digital, and large format / Astro-Tech R-C Imaging Extension Tubes
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Astro-Tech 1' extension ring for A-T Ritchey-Chrétien astrographs
 
Astronomy Technologies - Astro-Tech 1" extension ring for A-T Ritchey-Chrétien astrographs 
Our Product #:  AT1EXT

In Stock: Usually ships within one business day.
This Astro-Tech 1” long extension ring, installed between your Astro-Tech Ritchey-Chrétien astrograph and its focuser, helps you match the back focus required for your particular complement of imaging components . . .

[ More details . . . ] 
$32.95



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Astro-Tech 2' extension ring for A-T Ritchey-Chrétien astrographs
 
Astronomy Technologies - Astro-Tech 2" extension ring for A-T Ritchey-Chrétien astrographs 
Our Product #:  AT2EXT

In Stock: Usually ships within one business day.
This Astro-Tech 2” long extension ring, installed between your Astro-Tech Ritchey-Chrétien astrograph and its focuser, helps you match the back focus required for your particular complement of imaging components . . .

[ More details . . . ] 
$34.95



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Astro-Tech 35mm extension tube
 
Astronomy Technologies - Astro-Tech 35mm extension tube 
Our Product #:  AT35EXT

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 . . .

[ More details . . . ] 
$29.95



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Astro-Tech 50mm extension tube
 
Astronomy Technologies - Astro-Tech 50mm extension tube 
Our Product #:  AT50EXT

In Stock: Usually ships within one business day.
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 . . . ] 
$29.95



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Astro-Tech 80mm extension tube
 
Astronomy Technologies - Astro-Tech 80mm extension tube 
Our Product #:  AT80EXT

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 . . . ] 
$29.95



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Astro-Tech 2' prime focus adapter, needs T-ring
 
Astronomy Technologies - Astro-Tech 2" prime focus adapter, needs T-ring 
Our Product #:  ATPFA

Back-Ordered: Temporarily out of stock; will charge and ship when available.
This Astro-Tech 2” prime focus adapter allows unvignetted prime focus photography with most reflectors and refractors equipped with a 2” focuser . . .

[ More details . . . ] 
$29.95



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