Quote:
Originally Posted by TanjaC
Chip distance / camera fitting squarely
- If one or 2 corners are off, you might think its flattener and sensor not square, but then why are my stars round in the corners when imaging N.
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Chip distance could cause similar star shapes, if the distance is not correct then it may over correct the image.
I have no experience with APO scopes so I may be wrong but with my newt small distances make stars look like this. Obviously this doesn't explain why different orientation imaging behaves differently.