I recently (October 2021) purchased an EQM-35 Pro with SynScan V5 as my first "serious" mount for astrophotography. I'm getting fairly good results with 30-second subs, but if I try to go any longer than that to 60- and 120-second subs, I lose a large number (anywhere between a third and three-quarters) to periodic error. I've confirmed with Skywatcher customer support that my equipment supports permanent periodic error correction.
The information in the SynScan instructions that shipped with the mount is quite thin, so I'd be interested in hearing from anyone who has successfully trained PPEC on an EQM-35. I'd rather not make the jump to autoguiding yet for cost reasons. It seems to me that I ought to be able to use something like PHD2 in conjunction with the camera I normally use for astrophotography (a Nikon D5300) to train PPEC, but if I have the wrong conceptual understanding of how this process works, I'm hoping this forum can correct me.
One caveat is that I'm using a Mac laptop. For mount control I've been using CloudMakers AstroTelescope 4.2 quite successfully, although I could probably switch to KStars/Ekos easily enough if that's what's necessary to get PPEC working.
Edited by ple, 21 January 2022 - 05:57 PM.