Tried processing levels and curves again and treated all colour channels about the same. It is most probably too red but thats the way the camera sees it.
The reality is if just a small part of the image is presented with excess red it looks fine. People are not used to seeing widefields with the H Alpha regions accentuated. See crop of small region of large image below.
Large image 2.4MB
http://members.optusnet.com.au/~avan...LMC_6lpr_6.jpg
I do enjoy any feedback as it is easy to lose objectivity when you are too close to a hard won image.
Bert