You've done well taming the dynamic range, good detail down to the core and not over done with the colour
Have you done this in PixInsight? If you have, I am assuming you used AutomaticBackgroundExtractor (ABE)? I bring that up because it's dark and contrasty in the middle and but the outer dusty regions and a lot brighter.
ABE in it's default settings finds gradients that don't exist
