Test image #2
This is a 5 minute x 5 exposure test stack with the Star Tracker III. The bright object in the center of the frame is Jupiter (2 moons are visible in the original frame). The mount tracking has been validated and appears to be tracking with a high degree of accuracy. So the few pixels of drift in this image is most likely due to the polar alignment, which is still being tested. The best method is still yet to be identified.
No flats were used, so there are several dust motes.