On Thu, Jun 24, 2021 at 05:34 AM, Ray Gralak wrote:
Ray,
1. Either your graph is incorrect, or PEC is introducing a lot of drift. By the end of the worm cycle the accumulated PEC value should be 0 (but it's not).
I tried numerous times last night to create a PEC curve that starts and ends at zero or the same point. If you try to use any curve that does not you will of coarse get a sudden jump in guiding so they are not usable and one has to keep PEC turned off.? My only though right now is the RA tracking divisor of 89754 ought to be 89754.2. If you let the mount track for a couple of hours the mount does fall behind quite a bit. This problem will apply to any gearbox ratio other than 25:1. The only solution that I can see is? to download the PEC curve and not use Gemini II to calculate it.
Peter
