Quote:
Originally Posted by The_bluester
.... 1500mm FL, with 4.63um pixels. I am probably being harsh on it, this is an integration of only a couple of subs grabbed on the spot as opportunity knocked after I did something else and before I went to bed.
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.. that means NGC 3918 is ~15 pixels in diameter on your image (8 arc", 0.57 arc"/pixl).. there is not much that can be done with available data.. you should see a hint of "ears" though...
I found the image taken with 2000mm FL (Rubinar 1000 + 2x telextender).