Nice image - and a decent amount of data.
I'm not clear on your processing though - is this image a combination of Ha and RGB data or just Ha?
With my Ha images, I discard the G and B channels and just keep the R where most of the data resides. I tried it with your image - hope that's OK.
Core detail is lost a bit, but you can see the faint nebulous stuff on the periphery of the object.
Cheers
Doug
