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Old 06-10-2018, 08:02 PM
clive milne
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clive milne is offline
 
Join Date: May 2011
Location: Freo WA
Posts: 1,443
Quote:
Originally Posted by codemonkey View Post
btw... here's one of the issues I'm currently seeing with my scope. Three frames, one outside of focus, one roughly at focus and one inside of focus. I believe this to be astigmatism.
Correct.
Try rotating the primary mirror 90 degrees.
If the astigmatism in the image plane also rotates, then you have a defective primary.

~c
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