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Previous: Orientation of the A and G Box
Up: INSTRUMENTAL ALIGNMENTS
Previous Page: Orientation of the A and G Box
Next Page: GENERAL COMMANDS
The telescope is focussed to a nominal focus setting of 39.40 ( at 11 
C
using a 3mm thick filter) for this instrument. The A/G, TV and CCD can all
be in co-focus at this setting.
The rotation axis of the telescope (Cassegrain rotator) is offset slightly on the TV. A cursor and a CCD overlay-box indicate the centre and the approximate field-of-view of the GEC chip.