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A striking image Paul. A lot of detail there for 102mm aperture and around 3 hours exposure.
Colourwise it looks like it has too much green in there affecting the yellow of the stars plus the dust areas look a tad greenish hue. The reddish/magenta/slightly bluish hues are inhibited as a result. The blue core perhaps is not what it is usually shown to be (hard to comment on that because the others may be wrong!!). So the look of the colour balance is holding the impact of the image back from being even more impactful.
Hey, nice round stars - the PME eh?
I find colour balance one of the harder aspects of image processing and often the most subjective. After all these colours are not what we see when we view them with our scopes.
Some use G2V callibration (sun like stars identified in the image should be represented as white) to help with that. You can download lists of G2v stars from the Sky site. I have not done that myself but should as a test to see if it helps.
Greg.
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