If I choose to save and reuse the calibration, in which file (or otherwise) is it stored?
TIA and clear skies.
Steve
 

Steve,

I placed the stored calibration in a string in the same storage mechanism used for all the options you can set (e.g. the same place as the binary flag that says to reuse the calibration). 
Its key is SerializedCalibration:  invent.kde.org/education/kstars/-/blob/m...rs/kstars.kcfg#L2515
Honestly, I don't know where all those options wind up being stored. Perhaps one of the other developers can comment.

If you want to know the calibration values, they are shown in the calibration tab of the internal guider's options menu.
You can see the entire serialized calibration string if you enable the debug log for guiding, and then look at the .guide entries when your calibration succeeds.
The format of that string is shown here: 
invent.kde.org/education/kstars/-/blob/m...calibration.cpp#L298
or here:
invent.kde.org/education/kstars/-/blob/m...calibration.cpp#L341

I never did implement a calibration "library" or a way to manually edit the calibration.

Hy
 

On my Ubuntu 20 system:
~/.config/kstarsrc
Near the bottom in [Scheduler]

Thanks to Hy and David.
I was looking at how we could transfer the calibration from one computer to another. Sometimes we have a newcomer and the abilirty to do this could save us time in getting up and running.
Got it.
Cheers,
Steve