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Previous Page: Changing components in the slit area
Next Page: Setting Grating Angles
Previous: Changing components in the slit area
Up: Configuration of the A&G Box and Spectrograph
Next: Setting Grating Angles
Previous Page: Changing components in the slit area
Next Page: Setting Grating Angles
The light path is shown on the CAGB; ISIS; and ISIS_SLIT screens of the Mimic
display. The spectrograph can be configured for any combination of channels
with the ISIS_CONFIG command, or the folding mirrors moved explicitly
with BFOLD and RFOLD. To get light from the comparison lamps to
the cameras the user must ensure that the ACQCOMP mirror is in place in the
A&G box; that nothing else is between the mirror and the slit (particularly
that the Lid Cover is open); that a comparison lamp is on, and if the IPCS
is in use that an appropriate neutral density filter is in the comparison
beam. A typical sequence of commands is:--
It may be necessary to move any of MAINFILTND; MAINFILTC; FLENS_CALC_POL; HW_POLAR; QW_POLAR; ANAMORPHOTIC and any of the four ISIS filters to the appropriate position.