Hello
In order to correct the azimuth -50.49 misalingment, is suggested to enter first a smaller amount (in this case, for example, +30.00 ArcMin) and then try a new Plate Solve.
Then repeat again the procedure, moving always in the same direction, as long as no misalignment will be displayed.
In this way it will be possible to compensate the misalignment also considering the mechanical play of the MPA kit.
Please note that a certain amount of play is required in order to allow the movement transmission, preventing the MPA kit to get in stuck.
By clicking on the "ZERO" button, the display simply reset the ArcMin value.
By clicking on the Sync button, will be performed a synchronization of the value typed by the user inside the value field and the value reported on the ArcMin display.
Best regards
Stefano
Avalon Instruments Team