I have not been able to get the blue into M33 that I often see in other images, and so I decided to experiment by adjusting the channels in LRGB. I merely turned them down except blue, applied, then ran a range masked curve transformation. Boy with the mask inversion on it can really wipe out the noise presentation by just darkening the background and in this case I did not even run a noise reduction proc. But does this image pass the test, or is their too much blue in the background? I suppose I could have masked the image prior to running LRGB but that is not how I learned to do it. But then I never learned to do it by adjusting the indivual channels.
Edited by Ballyhoo, 08 December 2019 - 10:08 PM.