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Coma
Hi all
Have been trying out photography with a canon 60d camera attached to my 200mm F4 gso - I have a coma corrector (GSO model) but am wondering about the stars on the edges of my frame - coma? or tracking error? (this is a full frame - not cropped) -- would this be normal for a short scope like this or should I be able to get better?
the image was a stack of 5x 4mins and 5x 1 mins shots at 1600 iso
Any thought gladly received
Geoff
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