Scott,
Thanks for offering to do the guiding section. I'll send notes on how in a bit.
I think what I'll do, hope you don't mind, is start a new thread on the topic, with instructions on how,
mentioning that you volunteered and looking for others. Please look for that thread in the next 24 hours.
I agree we should have a gain for the DEC, and that the DEC guiding should be using the calibrated values.
I've just been conservative in making changes, and this 133 stuff predates me. I'll try to get to that after my current project
(polar alignment, see
invent.kde.org/education/kstars/-/merge_requests/165).
BTW, I was not saying "it could be combined with Integral Gain". I pretty much ignore the integral part of the control algorithm
(I did spend a week or two trying to see if that helped my guiding and couldn't get an improvement with it).
So, instead of a PID control, I really use P-control. No integral, no derivative, just proportional control.
And, yes I agree that the proportional control should use the calibrated values, along with a gain.
I want to caution you though, that, at least on mount (Orion Atlas Pro), which isn't as accurate as yours for sure,
the calibrated ms/arc-second value can be far from accurate for any given guider correction.
Backlash will rear its ugly head, especially for DEC, and you can pulse for most of a second without any movement.
Then the next time you pulse (in the same direction), you might get more movement than you expect from the calibration.
The calibration, after all, is an average of several movements (after backlash was mostly removed).
I guess that's one reason why we use control gains.
Also, I suppose, for your RA guiding, you might try the GPG guider with a low value for the predictive gain.
If you do try it, let us know how it works.
Hy