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Very fine work, Rodney.
Perhaps one reason why RGB works so well on the Trifid is that reflection nebulosity is a very important part of what is going on. Perhaps one could try being a bit quantitative about that, and actually work out the photon flux through OIII compared with photon flux through blue.
The image is very low noise already but perhaps luminance (here total of L+R+G+B) might help with noise in the faint bits.
Best,
Mike and Trish
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