Quote:
Originally Posted by marc4darkskies
Completely agree!!
John, I'm confused about what you've done. In the SHO palette, HII emission would show up as green. So, if anything, a raw SHO image of this neb, where HII dominates, would require you to colour rebalance quite a bit to REMOVE some green. Moreover, I have no idea why green would be absent in the first place to the extent you'd need to "put green in"  . Note also that putting green in will move you towards, not away, from an SHO image.
PS: Ah! OK, I see you've used the green filter, not Ha so your image is HaSGO. That explains a lot. You can't just put Ha in as a luminance channel without having Ha colour to hang off it. Won't work. You should start with Ha in the green channel and use LHa as luminance. |
Hi Thanks for your comments. I can see I'm going to have to give the RGB pallet another go.
So I can tell you my process and see if it make sense.
(this is in pixinsight)
After BG removal & stretch I combine SiiGOiii to make RBG.
I remove any greencast with SCNR
I then use a Ha in LRGB combination with Ha as L.
(I'm adapting my another workflow and have just realized I could have done LRGB directly but nevermind)
So this was an experiment to see what happened. I adapted it from this video
https://youtu.be/o4Rl3heOIro from Dylan O'Donnell where he uses a HaGOiii pallet as a compromise between narrowband with it's psychedelic colours and RBG.
Anyway I guess the suggestion is that I might like to try HaRGB, is this correct?
In reality I only have access to my Bortle 4 skies in my backyard so initially I jumped on the narrowband bandwagon.