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Description
To most accurately test and collimate telescopes, reflectors, catadioptric, and refractors, you must perform a star test. However, to do so, you need a star.
Sadly, a real star is not always available due to poor weather conditions or locat...
Reviews
4.5
2 ratings
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Very easy to use within house minimising air currents. Collimating a joy rather than a difficult chore outside at night particularly with a mount driven only in RA