[TrevorW]

Doug the min filter was an experiment only to see what it does as I haven't used it before, it really strips the image data, cheers

I did notice when stacking the lights in DSS the red channel wasn't as strong as I'd expect from 9 minute subs when flats where applied as compared to when using no flats

so maybe their was an issue with the flats

also remember this was taken under a full moon in LP suburban skies,

Brendan I've got better results like you when using the ED80 with a Canon 350d but then again that is a much shorter focal length with subs around 5 minutes and I haven't overstretched this image to bring out the nebula more.

Also nothing wrong with the scope as far as collimation is concerned probably more conditions some poor focus and the need for longer subs see the crop

I tried the selective sharpening as an exercise but still working on refining this technique

Thanks H will go back to the beginning and check level again

Thanks Darren

Marc have to agree sometimes less is better.

Thanks all for the feedback much appreciated