Thanks folks, Yes I know there seems to be a little bridging going on which I am confused about as I did not apply any sharpening or contrast to the image apart from the Middle part where all the detail is. Just a couple of aggressive stretching and Color enhancements on the stars. However the problem probably lies with the Collimation on my Hyperstar and also mirror flop issues which I have been battling for years despite the HD lock nuts which are not serving well
I am attempting my first collimation next week, hopefully I will not stuff it up further
much appreciated