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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yltansg
 
Posts: 305
Joined: Mon Aug 31, 2009 3:35 pm
Location: Bukit Batok
Favourite scope: Borg 76 + Solar Scope SF50

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:
http://astrojargon.net/MaskGenerator.aspx

This is the mask for a 127mm ED refractor

Image

A out-of-focus Sirius

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A focus Sirius

Image

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Gary
 
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Joined: Tue Sep 30, 2003 7:06 am
Location: Toa Payoh

Re: Build Your Own Bahtinov Focus Mask

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

Congrats and thanks for sharing the link! :)
http://www.astro.sg
email: gary[at]astro.sg
twitter: @astrosg


"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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