After a couple of comments about the colour and an email from a mate I decided to try a repro on this target. Interestingly I don't seem to be able to replicate the traditional blue hue to the nebula. What I do find interesting is the faint Ha/ red nebula in the top of the nebula and the redish areas around the red stars in the nebula itself.
Cloudy as hell here tonight but when it clears I will have another go to add some more data to the image and I might even spend a little time with a Ha filter over this area and see what shows up.
I have added another image to the list which is heavily leaning towards the blue chanel. See what you think.
