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Old 30-10-2019, 02:27 PM
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multiweb (Marc)
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multiweb is offline
Join Date: Oct 2007
Location: Sydney
Posts: 21,275
Originally Posted by Martin Pugh View Post
Thanks for the replies.

I have been reading about a tri-bahtinov mask that is supposedly good as both a focusing and collimation aid. Would be interesting to try. Anyone making them here?

That's pretty cool. Will have to try that for star collimation. I can never judge the diffraction rings clearly.
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