This was something i was pondering a while back after going to my Edge. Since we can take the unguided output of phd2 and run it through PECPrep and then use that as a PEC curve, I was wondering if anyone has seen feeding back PHD2 logs without guiding to see what the mount was actually doing. sometimes I get these transitions when Dec or RA will go crazy for a little while then settle down. If you could place the mount where it was having issues, turn off guiding and feed the logs into EQMOD it could potentially show what the mount was doing. So you could see backlash, cable snags whatever. I think the issue would be to know exactly where the mount was so this might only apply for mounts with encoders.
Just curious if anyone's tried this Ive been down for a while but trying to get back in the game and planning on getting my guiding going with new 290 camera and OAG. I want to baseline my guiding then install my Rowan zero backlash RA kit.