Mulling over the data, I ponderd why the loops of this nebula showed a distinct magenta cast (due H-Beta), yet the associated nebulosity to the left of the loops were decidedly red. Ocham's razor generally works, hence I suspected interstellar dust.
A quick wip around the web showed hints of this, but I found nothing that captured it really well.
Sure enough, armed with yet more data (I think I devoted 20+ hours to this sucker) the background dust is indeed obvious....and , yes, yet another re-pro.
I opted for much lower contrast in this version (I suspect this really is a low contrast object) and while technicolour is nice...it lacks subtlety.
The end result is here (suggest you refresh your browser if you have a been there before)
http://www.atscope.com.au/BRO/gallery55.html