Quote:
Originally Posted by multiweb
Yes that's fine. So now shoot some darks at -15c and 0.13s duration. Do 100 of them. Stack them and call it master bias.
If you're familiar with pixel/file maths. Get your master flat and subtract the master bias you've just done then save it as new master flat. Use that one to do your flat fielding and you'll have a nice even background with no dust motes or color gradients.
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Thanks Marc for getting back on this, I'm sorry I'm not familiar with pixel/file maths??
It does sound like I'm getting close thanks to you!
Paul