[Paul Haese]

Guiding with the PMX, RC12 and stxl integrated guide camera I am seeing odd guiding activity. The dec axis is guiding quite nicely in maximDL. The RA on the other hand looks odd. Over several minutes it looks like a sine wave travel over and then below the centre line. And; looking exactly like the position on the PEC graph (which is 3.5 arc seconds below and above the line). The PE was originally 7.6 below and above the centre line. So the correction is the right way around.

Guiding aggression has been tried from 3 to 8 and nothing made much of a difference. I have even tried it without PEC enabled. PA is out by 3.7 tics on MA and 4.7 on ME. I would not have thought this would make much of a difference, though could be wrong at 2440mm.

Stars are round but large though.

Anyone got any ideas? This is one of the last hurdles to go now.