Many thanks all. Iris software has a nice Dynamic Stretching and Colour Stretching function, which brings out star colours after finishing off in Photoshop.
While guiding I was watching Ninja Warrior on TV, guide cam image was so magnified each pixel was a few mm across on the screen, and endevoured to keep the star as steady on a virtual reticle as possible.
I cant speak highly enough of the Sharpcap Polar Alingment.
https://www.sharpcap.co.uk/sharpcap/...olar-alignment
Its so satisfying to be able to move the mount in altitude and azimuth and see the SCP move right onto the axis of rotation, then do another iteration and see it report alignment within arc seconds, then having to hardly touch the DEC control during the 10 minute subs.
Scott