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Originally Posted by Octane
John,
...have you tried taking manual dark frames rather than the in-camera noise reduction?
Regards,
Humayun
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Yes -I used to use manual darks exclusively - but then I ran in to issues with amp glow on the longer exposures - in camera NR seems to be much better at removing that. I am unsure as to the source for the hot pixels - they leave little trails on the stack - could be they came from the bias or flat frames rather than the lights. I will have to check. I thought they should be easy to remove as they are a single colour - but I cannot find an easy way to remove them...
Is anyone else imaging with a UHC type filter in line? Am I mad doing this ? Should I use a LPR rather than UHC to ensure more realistic colours?