That's awesome Nathan! Way better than my attempt
It confirms that my processing skills need ALOT of work. There were only about 8 darks or so in that stack, probably not enough? Those purple lines around the stars bugged me also for a while. It turns out there is a setting in the QHY called "Clamp" depending if that is on or off, it is supposed to reduce that effect, but it doesn't seem to remove them 100%, which is a bit annoying. What did you process the file in?
Looks really good, I'm happy the data is good and that it's possible to get something out of it!
Erik