If you mean there are some grey patches/spots ... there were some very saturated blue patches that I simply magic wand selected and desaturated etc.
As I said this is just me messing around with the Ha data and an old RGB posting ... both web images and not meant to be a seriously good job Fred ... just wanted to see what it would look like if I did have a go at processing HaRGB ... I've never done it before.
Thanks for your comments and for looking !
