[Lee]

I have noticed a definite, slow drift whilst guiding with PHD. I am guiding through an ED80 with a DMK FW cam and GPUSB, imaging through another refractor. Both are mounted side/side on a G-11. All PHD default settings used, 2s exposures. G-11 set to photo mode.
PHD calibrates without a problem.

Drift appears to be in RA.
I don't think it is flexure, as both scopes seem very solidly mounted, and the drift seems sustained in one direction.

Should I have changed any settings???