Quote:
Originally Posted by Startrek
Ryan,
Nothing wrong with imaging and posting M42 , it’s a classic summer object with so much to offer. Your framing , resolution, details and colour are excellent !!!
Only one observation though ( and I’ve seen this appear in some of your previous images) your stars are not quite round. The star cores look sort of diamond shaped as with the halos around them. It’s obviously to do with the imaging train on that fast newt or coma corrector, spacing ????
Other than that it’s a ripper of an image
Well done !!
Martin
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Ryan,
Stars with a slight diamond shape are usually caused by either a pinched primary mirror ( if it has 4 mounting clips not the usual 3 ) or possible astigmatism in the primary or secondary mirror
If you point to a Star and defocus on live view , is the Star a perfect round donut ??
Also Ive read some processing software like PI can cause stars to be slightly diamond shaped too in one of the tools ??
Cheers
Martin