I took several long series of images both with and without PEC on...works much better now with PEC on,
What i always suggest in a case like this is to use something like PHD2 or PEMPro as a "second opinion".
Do whatever you want to do with Starlock re training the PEC.
Now turn Starlock off and Turn PEC off.
Select a star somewhere near the meridien and between DEC = 0 and your zenith.
( closer ot DEC = 0 is probably better )
Start the "logging" App and collect say 6 turns of the worm.
Now, whilst still logging, simply turn PEC ON and let it run for another 6 turns.
The first part of the run will show the native PE in the gearbox and worm
The second part of the plot will show how well the model has corrected it.
I haven't used the PEC tool to try smoothing the curves yet...any benefit to doing that?
IMHO its a toy that you really have no control over.
I only ever use my app to read and smooth the curves, and i dont do Meade based "updates"
as with the non starlock mode, you have no idea if a bad update corrupts a good model.
I prefer to do several clean trains and then deal with them myself externally,
as i can see each run overlaid over the prev runs, so can easily see when things go off the rails
and exclude bad data if i want.
Just for info, i have attached a plot from an LX850 user who was doing trains and updates
then "played" with PECTool
Very interesting how corrupt it can become :-)
There was another dataset that introduced massive drift as the final model wasnt normalised properly.
No idea why tho.
I would like to Meade give us the choice of allowing additional fine tuning of the Starlock Drift align
I also wouldnt bother with Starlock if drifting, i just use a webcam on the main OTA
set it square to the DEC axle best i can and watch a star on the screen ( relative to a XHair ).
If it drifts, i know my align is off.
If you also log it over time ( say with PEMPro or PHD2 ), you can see the real drift angles "live"
and watch live the effects of tweaking the mount controls.
Andrew Johansen Melbourne Australia
This plot shows the result of a "StarLock" based train and multi update ( dark blue traces )
All the others show what ended up getting backloaded as they played with PEC tool