Quote:
Originally Posted by Placidus
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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Thanks MnT, I like your observation on the contribution from OIII and blue and reflection nebulosity. For interest I have attached a screen shot of the OIII and Blue masters (still linear but with a screen stretch only). It does show an overlap between the two channels but with more detail in the blue.
Quote:
Originally Posted by Andy01
A good triffid never gets old Rodney, well done and lovely rich star colours  |
Thanks Andy. Interestingly I have not imaged this object previously even though I've been plugging away at this hobby for quite a few years now. I guess we all need at least one Trifid in our bag so I can tick that box now
