I realised why it was soft, there is no luminance layer.
So I reprocessed everything and did some deconvolution on each of the RGB subs to tighten them up (2x2 binned).
It looks a lot sharper now and more vibrant.
The Ha only is also quite interesting.
Colour:
http://www.pbase.com/image/137931271 regular
http://www.pbase.com/gregbradley/ima...31271/original large
Ha:
http://www.pbase.com/gregbradley/image/137931641/large regular
http://www.pbase.com/gregbradley/ima...31641/original large
Greg.