the dark edge in the bottom right is when the mirror is out of its range
i deduce this because toward the end of the last lines, the steering mirror generates a weird noise and the current indicator is orange
delete some useless code
readjust reference beams and recenter cameras. i was able to remove one lambda/2 plate by obtaining the reference for the reflected beam from a different position
i modified the angle of the steering mirror (center should be 1200 1200, now)
i also deleted some unused code
modify the acquisition function so that no data gets lost if something goes wrong
after modification of the steering mirror try to find new center and range
with
i from 300 below 3000 by 50
j from 500 below 3000 by 50
the region of interest is: 48x38+2+11
i.e.
i from 400 below 2500
j from 1050 below 2400

but is important not to move the mirror to the lower right of this map
found a working angular range, also store the information about the angular range in the dat file
o9 and o8 are my first two scans with all angles and all polarizations
the mosaic looks good, now