Reconfiguration of Kontron computer
Camera head color codes
Position of Entrance Window field stop
Accordingly to the reference flange used for alignment, the field stops are not in the nominal 120" equilateral asterism. The optical measurement suggest that the
BlueChannel and
RedChannel are shifted 0.5mm radially outside, and the
YellowChannel is shifted 1.5mm radially outside.
We decide not to move the windows because the light from the calibration unit is actually entering the 3 filed stops. On the other hand, browsing in
DiaryRun7 notebook logs we found evidence of a measurment that show a non-perfect overlapping of the field stops with the calibration unit in day-time. This suggest that a better field-stop alignment (that can be realized only partially by shifting radially the entrance windows) may be needed once the
LgswUnitSx and its calibration unit are installed
--
LorenzoBusoni - 24 Aug 2015