Hi again.
I wish Id taken in the mount on previous days, it made a great difference. Sadly, today it was not good conditions, a lot of cloud intruding, but I went ahead regardless, this time tracking by using my 1986 vintage "Sampson" GEM mount, and increasing to 30 second exposures. I didnt use in camera N/R to save time and get more exposures in. Was a lot of cloud in each sub but as it was moving it only shows up badly in the bottom part of final image
Image is 69x30 secs ISO800, 50mm f1.8@ f2.8. I just set camera on multiexposure, 30 secs locked down shutter release remote switch and let it go, occasionally interrupting proceedings to check how it was going. The thick cloud near horizon caused some alingment problems with the stars (as there werent any) hence the distortions near the bottom of image.
Larger sized version
here
Scott