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the darker of the two, the other one has not added to the detail rather has highlighted the noise in the background which detracts from the image also there appears a definite band around the perimeter rather than it fading ito obscurity. there are a couple of tricks to improve the sky background involving getting a less processed version, and using a blend to replace just the background and leave the stars and nebulosity intact, the less processed one has to have the background a smiiiidge lighter than the stretched processed on then blend using lighten, its a very fine line to getting it right so that it cant be detected. as its all the original data its fair game.
this effort is much more even accross the images compared to your first post, a definite improvement.
i sometimes will get a hubble image or an extremely good one and get an idea of just what is actually there, sometimes you can enhance detail that actually is not there it could be noise or something else..... give you an example, i imaged the crab nebula and it has almost a little bite out of the misty nebulosityover it, i though i had stuffed up with a bit of dirt over it so tried to enhance something that wasnt there. so if you are in doubt check multiple images it works for me, then try to do better than they have.
clive
the loop extending from the left of the galaxy at about 10 oclock ?
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