This is revision 12. This is the final revision.
I am sure it can be improved with more data, RGB stars, but I have had enough as I am sure you have.
Took the advice of other members and tried 2 minute subs and layer masked the end result with the 15 minute subs to produce a less blown out core/keyhole. It is still a bit blown out but an improvement.
I have to admit it looks really good when printed out on glossy paper. Not so good on some monitors.
Anyway, thanks one and all for your advice and encouragement. I now move on to the Rosette
Full version here
http://www.astrobin.com/152724/B/
Cheers.
DJ Scotty