Hi All
I decided to re process my Ha images of M8 and Eta because I really wasn't happy with the first attempt.
This time I extracted only the red channel from the exposures and loaded them into DSS ... hey presto I got 6 frame one hour stacks.
With better data to work with I did a slight post processing in PS and here are the results.
Still not sure if I'm doing this right but I'm happier with these versions anyway.