Couldn't add this image to my original post so I'm starting a new discussion instead.
I discovered PixInsight (PI) for astrophotography and seeing that this is the de facto imaging software for this type of photography got me a trial license and started working on the same image, just using a larger crop. To say I was pleased with the result would be a clear understatement.
Wow thats nice what exactly does the siftware do to enhance the image
It's even closer to the metal than Photoshop and you have all kinds of degrees of freedom.
Big fan of PixInsight but the learning curve is a tough one.
There's some truth in that ;-)