I know others have had good luck with unguided imaging, but we just got the first clear and stable night in Southern California in what seems like months, so I was able to try out my latest APPM model, using Ray's experimental "declination arc" feature and hundreds of mapped points.
Seeing was a bit under 2 arcseconds, which unfortunately is good for my location. AP1600 mount with encoders, and a very long and bendy AP206 scope. Most 10 minute subs never had a single guiding correction. Ray deserves a lot of credit for APPM being able to model a difficult scope so well across the sky.
Typical Maxim guiding graph looked like this (and I think most of the variation was still due to less than excellent seeing):
Dr. Barry Megdal
Shb Instruments, Inc.
19215 Parthenia St. Suite A
Northridge, CA 91324
(818) 773-2000 (818)773-2005 fax
Dept. of Electrical Engineering