Mặt nạ Bahtinov cho kính thiên văn Celestron C8

This mask is designed to easy fit the standard C8 sct. the central diameter is 72 mm and gives some slack for easy fit and removal during cold nights.

The other masks Ive found has an outer diameter the same as the aperature. This means that the mask is placed directly on the front corrector lens. this can scratch the surface and induce abberations in your optics. Ive made this wide enough to rest on the corrector locking ring so that the mask never touches the glas when in use.

I used the Bahtinov generator found here:

https://satakagi.github.io/tribahtinovWebApps/Bahtinov.html

I would like to thank the creator of this generator for such an superb tool for us DIY astronomers.