Hey Brian-
Yeah, sorry I didn't provide that:
An overview of the log:
1) Several minutes waiting for PHD2 and mount to "settle" and then GA, during which Dec drifted and gave a bad PA measurement.
2&3) Random short stuff...ignore.
4) Redid PA with Polemaster, recalibrated PHD2 near Celestial Equator and Meridian as sanity check.
5) Short sanity check guiding near calibration location, seems OK, maybe issue is position related?
6) Waiting to "settle" and GA again...similar result to before redoing polar alignment.
7) Very quick test seems OK? (Focusing with OAG requires that I stop/pause guiding...)
8) Imaging. All corrections to Dec are "down" until 21:26:44. slightly <15 minutes, so my 15-30 min assessment above might be a bit on the long side, but not really considering time spent waiting waiting to settle and GA run in #6.
9) After refocus, no apparent bias in corrections to Dec.
?
I have had a similar symptom after doing meridian flips where Dec guides (arguable successfully) entirely from one side for an extended period before settling to back and forth adjustments. This was with a guide scope and different main scope, just as a control...
