I just opened up my guide log from my last session and found something I can't explain:

The DEC axis has near-digital jumps over the course of the session.
The funny thing is: Guiding was just enabled for RA and not for DEC...
So do you have an idea what could have happened there?
Field drift due to polar alignment should be continuous and always one directional, right?
The night was also very still, no noreable wind was going on.
The DEC-axis was slightly front heavy and the target was close to the horizon, so the minimal play in the worm gear should be taken out of the game by these measures.
I am looking forward to your ideas!
ps: yes, I know... The mount is super cheap and not a good choice for astrophotography, but I am trying to max out the equipment I have.
Regards, Volker