Quote:
Originally Posted by michaellxv
Should I be using a longer exposure for this? Although from my testing that just pickes up too much sky glow at home.
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Sky glow can mostly be removed by adjusting the black point of the histogram while processing.
I usually try to expose as long as I can before the white end of the histogram begins to clip. I have read it is best to shoot with a peak around 1/4 to 1/3 of the way from the left of the histogram, but I have gone 1/2 and 2/3 of the way before without clipping the highlights (overexposed, image shifting off the right side of the histogram.)
See link:
http://www.astropix.com/HTML/I_ASTROP/QUICK2.HTM