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Free Tri-Bahtinov mask for Celestron C90 telescope 2023-10-04

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Author Tracy
Creation date October 4, 2023

Overview Extra info History

Tri-Bahtinov masks help to achieve a very precise collimation and focus on telescopes. This mask is designed to fit on the older orange Celestron C90.

Submitted by: Tracy

Downloads: 0

Views: 41

First release: October 4, 2023

Last update: October 4, 2023

Rating: 0.00 star(s) 0 ratings

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