Great work Kevin
I'm impressed be your guiding skills, the stars look perfect
great data to by the looks, do you know the exposure times? and roughly how many subs? it's nice and smooth.
Although do you reckon it's a bit lacking in colour? (besides the red)
In bringing out the faint red parts I think you may have lost some detail in the high lights and squished the other colours. I hope you don't mind but I had a bit of a fiddle and I think it might be worth while to do a repro and see if you could bring some of the colour back. Other wise, impressive image
See the original, and the fiddled.
Cheers
Jo