After I noticed the stars were trailing on the images of M51, I rechecked the polar scope picture when I’d re-positioned for the Double Cluster in Perseus. It required a small tweak in azimuth and I then took 10 3 minute exposures at ISO 400 that were combined in Maxim. The trailing was eliminated and although there was some coma apparent in the corners of the image I removed some of this by cropping the picture. Looks like a field flattener will be required.
