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Engineering
PNS
The Planetary Nebula Spectrograph is used at CASS focus station, with two detectors called
PNSL and PNSR. More info here
Startup
TCS:
USER> STATION CASS
USER> INSTRUMENT OWN
USER> AGSELECT CASS
USER> ZERO ALT TAR/ABS
USER> ZERO AZ TAR/ABS
USER> ZERO ROT ABS
USER> CAL LAST
USER> FOCUS ?
USER> WAVELENGTH 0.6
USER> TEMP ...
USER> PRESS ...
USER> HUMI ...
Autoguider:
Cass Autoguider
TV:
Cass TV
Observing System:
UltraDAS
Preparation
Telescope focus:
?
Determine rotator center:
Using AGCOMP.
Calibrate procedure:
Calibrate is done with respect to the rotator center and at fixed mount PA
Determine aperture offset:
?
Observing
Acquisition:
- Center up target on at the rotator center using AGCOMP TV view.
- If necessary, perform a blind offset to the science target
- Move mirror to AGSLIT. Note that from this point onwards you
will no longer be able to see the object on the TV!!
Autoguiding:
TO FIND GSS GUIDE STARS SUBTRACT 90DEG FROM THE TCS SKY PA.
There is a -90deg offset from instrument isis or instrument own.
Data Handling
With Ultra-DAS use fitsinit to initialise new tapes and fitsout to write the
data. Change directory to /... where the data are stored, execute the commands
and follow the displayed instructions. Alternatively, use the tar command.
Miscellaneous
