Since it’s almost Full Moon I decided to capture a star cluster to continue testing my new mount. This time with 90 seconds exposure time, like on the Star Adventurer.
A slight DEC error was present on 4 of 48 subs… The interesting fact is that the error appears in a 10 minute interval = one worm gear period of the iOptron GEM28!
Full resolution and more details
I counted 4 subs with DEC error. This is one of the four at 100% (cropped):
All other subs looked like that:
