Thanks, Michael and Alex.
Focus may well be a problem. I was using BackyardEOS with a DSLR previously and focusing was really simple - live view, select a star and fiddle focus until FWHM was minimum. I'm using a trial version of SG Pro at the moment and there doesn't seem to be a similar simple way to get good focus.
With this image I was concentrating so much on colour that I forgot to do any sharpening. Here is the previous (and a detail view) with sharpening. Better or not?
Kevin
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