European Southern Observatory
New Technology Telescope
The purpose of this procedure is to monitor the mechanical flexures produced into EMMI - RILD with the rotator at different angles measuring the shifts of image on CCD in x,y and focus.
The procedure takes n exposures of the pinhole seen through Focus Wedge
, changing the rotaror angle by a rotator step editable in the RildFocusFlexure.obd,
then, measures the displacement of the pinhole image on the CCD in x
and y directions for the leftmost image
and dy ( defocussing) for the
(for spectroscopy, x axis is along the dispersion and y axis is across the dispersion).
The RildTiFlexure.seq template moves rotator b from wemmi.
Check that pinhole is installed: Load Rild_tec_Flexure.obd in BOB : If you wish, change the rotator step angle : Check that rotator may rotate safely :
it is advised to keep light on in EMMI room and switch camera video watching to EMMI.
- no interlock is on
- M3 is looking side B
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