Hi Peter - very nice indeed,
You've got the red nebulas coming out!
I think it just needs a little brightening using HDR toning.
I hope you don't mind - I did it - only a 1 minute adjustment
but I think it uses the available dynamic range much better.
Wow! That's so cool Peter. Perfect field and image scale for it. Love the colors you've come up with. Topshelf. Much better than my yellow goober version. Back to the drawing boards methinks.
Excellent detail, with round stars. I think the saturation is a little under done (funny me saying that as I tend to like under saturation) for my taste as you could do more to bring out the blue stars and the core tones.
The Ha regions are well shown though with NGC588 looking quite natural. It often appears to look like it has been painted in on many images.