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I just did a stack with nebulosity 2 - the stars were a little fuzzy (this is probably weather or focus) - but no rings around stars!
So maybe it is a processing problem - all I need to do now is find the correct parameters (I hope).
What should I use for an unmodded DSLR?
Is there better software (preferably free) than DSS that does auto-stacking etc.
Regards,
Tony.
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