[DiscoDuck (Paul)]

I've been having trouble with RA guiding for my last few sessions. Massive spikes in RA as per the attached PHD2 log - up to about 4". Dec on the other hand is ok.

I thought it might be balance, but ensuring it was imbalanced correctly made little difference. Also tried balancing perfectly and going very imbalanced.

Some guiding was much worse than what you see there, with the spikes happening every couple of guide frames.

Guide star was a bit faint, but if that was an issue, surely it'd have effected dec too. But tried a brighter guide star and similar issues.

Is the RA meshing too tight and it's sticking? What else could cause this?

Comments and ideas/advice much appreciated.

Thanks,

Paul