I'd be happy to look if you posted a log (enable debug logging for guiding), and also your guidelog (parallel directory to the logs directory).

But before you do, here's a few questions:
1) Does it guide well without dithering? This is showing quite large guiding error. See if you can get it to guide under 2 pixels rms (really ideally under 1 or lower). I'd like to see good guiding before attempting dithering.
2) Why 1-axis? Why not guide in DEC?
3) Can you run PHD2, and in particular their guide analyze or whatever it's called and see if that comes up with some warning? [There is no such analysis tool for KStars at this point.]
4) Of course, as always, the most important question is, how are your captures?

Good luck!
Hy

Read More...