Thanks all for the comments and suggestions.
Doug I will try the fade on the min filter. I have been doing another layer and then just changing the opacity, might be worth using the method you suggested.
Gary, I thought you knew me. LOL. I am crazy enough to be out there for long durations to collect the data; and I am pretty stubborn when it comes to getting things sorted. Still a long way to go until I am totally happy with this type of imaging.
Martin, I reckon Greg got it right. Couple of those star cores are probably due to deconvolution that I did in CCD stack on the luminence layer. I spotted this late in the piece and knew someone would see it. Thanks for picking it up.
Allan, just do what I do, setup the scope and start collecting data night after night. Use exactly the same guide star each night and at the same angle. Strive for perfection (that is what I like to do all the time) but never give up.
Marcus both you and Greg have suggested that I up the saturation. Might have to give that a go then. I sort of knew I should but I was being conservative. I will remedy this as soon as possible.
David, I might have to take a look at pixinsight at some point. Thanks for the tip.
Greg GSO have promised to do a deal with me on the 12" for the promotional stuff that my images and reviews have done for their sales. Time will tell if they are serious about this offer. At any rate these scopes are nicely figured and as many can see will produce pretty reasonable images even for a hack like me.
I use Ken's deconvolution all the time now in a limited capacity on most of my images just to bring out the sharp detail. Interestingly I adapted the masking technique for nearly every aspect of my processing now, jus so that I selectively change one part of the image. I went over the top on the stars though and as I said early only realised late in the piece. Just rushing a little.
Thanks once again. Much respected.