Draft: Improve rotatorsettings UI

After a steep learning curve with my new rotator, I tried to improve the rotator setting user interface.

1. I've changed the labels to make the function of the respective parameters more evident.

2. There are to modes now: (both modes preview the sensor frame in the planetarium!)

• Direct mode (standard), changing the the current rotator angle and/or the current sensor frame PA.
• Job PA Preset Mode, setting the sensor frame PA for a sequence job.

I'm looking forward to your feedback.

Two screenshots showing the two modes:

Direct mode

Job PA Preset Mode

TO DO

1. Combine "direct" and "job" mode: Only one "Sensor Position Angle" decoupled input
2. Create "Calibration Mode": Rotator coupled for prewiew and doing a plate solve
3. Implement flip awareness: Rotator Angle in "Calibration" together with "calibration pierside" have to be saved.
   Every time a calculation has to be done, check the current pierside. If this doesn't correspond to the saved calibration pierside, the calculation has to add the "flip angle" of 180°:

get current pierside
If (current pierside == calibration pierside) do
     nothing
else
     rotator angle = (rotator angle + 180) MOD 360
do all calculations

(Falcon does save its angle internally. Bur are there rotators which do not save their angle? Then this parameter has to be saved too)