Quote:
Originally Posted by RickS
The downside is that it does take substantially longer to get good SNR with dim targets.
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Just happened to have some data that I'm working on right now. The target is NGC7497, a small galaxy visible through lots of dust. I extracted luminance from just over 31 hours of RGB data and compared it to just over 9 hours of real Lum. The SNR estimated by PI/SubframeSelector is about the same and eyeballing them they look very similar.
Of course, the luminance I'm actually working with is a combination of both
Cheers,
Rick.