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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

Baader Alan Gee Telecompressors

The Baader Alan Gee Telecompressor is a focal reducer designed for Schmidt-Cassegrain telescopes and long-focus refractors, often used in front of a binoviewer or diagonal. It shortens the effective focal length to give a wider, brighter field without changing eyepieces.

This line includes the Telecompressor Mark II, the Universal 2" Telecompressor (UAG II), a centring ring for 9.25" SCTs and a 19mm M36.5 extension tube to fine-tune the reduction factor.

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Baader Planetarium Alan Gee Mark II Centering Ring for SC 9¼"
$30.00 - $30.00
$30.00
$30.00 - $30.00
$30.00

Baader Planetarium Alan Gee Mark II Centering Ring for SC 9.25"

BAA-2454410

Adapts Alan Gee II Telecompressor to larger SCTs Ensures precise optical alignment Designed for Celestron 9.25" and 11" Schmidt-Cassegrain OTAs Pr...

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$30.00 - $30.00
$30.00
$30.00 - $30.00
$30.00
Baader Planetarium M36.5 Extension tube for Alan Gee II – 19mm
$24.00 - $24.00
$24.00
$24.00 - $24.00
$24.00

Baader Planetarium M36.5 Extension tube for Alan Gee II – 19mm

BAA-2454411

19mm Extension Length Proprietary M36.5 Threading Designed for the Baader Alan Gee II Telecompressor Thin-Walled for SCT Baffle Tube Clearance ...

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$24.00 - $24.00
$24.00
$24.00 - $24.00
$24.00
Baader Planetarium Alan Gee Universal 2" Telecompressor (UAG II)
$223.00 - $223.00
$223.00
$223.00 - $223.00
$223.00

Baader Planetarium Alan Gee Universal 2" Telecompressor (UAG II)

BAA-2454405

Unique telecompressor designed for visual use with binoviewers Based on the flat-field Alan Gee design by Roland Christen of AstroPhysics Enables ...

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$223.00 - $223.00
$223.00
$223.00 - $223.00
$223.00
$308.00 - $308.00
$308.00
$308.00 - $308.00
$308.00

Baader Alan Gee Telecompressor Mark II

BAA-2454400

Dramatically widens the field of view of Schmidt-Cassegrain telescopes Engineered to produce a sharp, flat field for visual observation Creates a ...

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$308.00 - $308.00
$308.00
$308.00 - $308.00
$308.00