> Poita, Mine fired up second attempt, failed to connect first time but a restart of the software got it going. I'm just cheapskate, didn't want to pay out big $ for a guide scope sytem and GPUSB was only $100. I have short direct connections to the PC , camera and mount, only one short USB extension and no other hardware involved so probably minimised any possible breakdown points. Very stable the whole night, about 2hrs 30 mins with a 2 secs interval setting.
> Malcolm, 'Coma' is how I described it but that is not what it is actually. Better descibed as a 'comma' problem !! Each star image is in the shape of a small delta shaped tick instead of nice and round. Collimation is my first step. I'm hoping there isn't any major build misalignment that I've messed up, focal mount out of square etc . The camera works ok through the 80mm so that is eliminated but if the optical train is skewed .... then I'm skewed as well.
I hope not. The mirrors worked ok in Skeletope I although I never did any any pix through that. Visually I can just see the problem ( my eyes are not the best unfortunately ). More tests and investigation required.