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First galaxy attempt
I'm still struggling horribly with drift alignment.
I'm doing 30-second exposures with 15 seconds panning in one direction, 15 seconds in opposite direction, trying both axes every time... all I ever seem to get is perfect straight lines, not the vees I'm told to expect. If I do a 30-second exposure, though, the stars are still slightly elongated.
Anyway. I took about twenty 30-second stills and somehow, through trial & error with both az & alt, I somehow stumbled across a reasonably good alignment... so had a shot at M83 for the first time.
Orion ED80 with 0.85 flattener
NEQ6 Pro
Nikon D3300
ISO 1600
10 x 90 second subs
6 x darks
6 x flats
Thoughts, recommendations?
[Side note: I tried 3-min subs at ISO 800 but for some reason I got doubles of all the stars - not streaked, but actually duplicated seperately. What's that about?? I'm guessing something moved (it's a little windy tonight) but it happened with all four 3-min attempts and not once with my 90-second subs. Could just be a coincidence, I suppose. I can't think of any other way to get doubles like that.]
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