Quote:
Originally Posted by Prickly
Hi all,
21mins (42x30secs), balanced mount, drizzle (to a slight degree), no autoguiding
Some unusual star halo (bright) not due to processing. Any ideas? Focus? Chromatic abberation? Filter reflection. Doesnt seem to be with blue stars.
Cheers
David
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Hi David. Great subject isn't it. Seems to me you have 2 issues going here. Focus is the first. It's out. The brighter stars also show some halos that look like they might be chromatic abberation. But this would only be true if you were using a refractor. It may be that with sharper focus, that may go.
So taking one thing at a time, that's where I'd start.
cheers
Peter