Build Your Own Bahtinov Focus Mask

Wanna make a scope? Or better still, grind a mirror yourself. Or, you have some good tips in making a really useful accessory? This is the place to show what your hands can do...
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Build Your Own Bahtinov Focus Mask

Postby yltansg » Mon Oct 15, 2012 8:11 pm

I have seen some sifus using a focus mask for AP focussing. I decided to make one myself using the mask generator at:

This is the mask for a 127mm ED refractor


A out-of-focus Sirius


A focus Sirius


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Re: Build Your Own Bahtinov Focus Mask

Postby Gary » Mon Oct 15, 2012 9:51 pm

Congrats and thanks for sharing the link! :)
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"The importance of a telescope is not how big it is, how well made it is.
It is how many people, less fortunate than you, got to look through it."
-- John Dobson.

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