Binning helped rather a lot as did the isolate tool in life. Biggest mistake seemed be redoing a global stretch after wiping instead of stretching as is. A mistake I picked up form an online tutorial somehow. Also I guess there are always compromises to be made between noise and dark backgrounds: basically it seems there's only so far you can stretch limited data. Anyway a version with darker backgrounds attached (one cropped for more to show more detail here) although the scope of the nebulosity is a little less.
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