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UKIRT Annual Report 1995 and 1996
THE UNITED KINGDOM INFRARED TELESCOPE
ANNUAL REPORT
1995 AND 1996
4. Report on Operations
4.4. Instruments
4.4.1. CGS3 (10 and 20 m
32-channel low resolutionspectrometer)
CGS3 was scheduled for about ten nights per semester during 1995-1996 and
for the most part operated reliably, apart from an occasionally noisy or
dead detector. Most of the astronomy done with CGS3 was studies of
galactic and solar system objects. The ratio of the number of publications to
allocated time for CGS3 compared very favourably with those of other
common-user instruments.
Micrometers were installed on the external alignment mirrors of the CGS3
optical table, in order to simplify and quantify the alignment procedure.
Photometry software was developed and the entire data reduction software
package was ported to Unix.
Future use of CGS3 will decrease because arrangements have been made to
provide the U.K. community with access to the Japanese instrument MICS, a
combination camera and spectrometer. 1 However MICS operates only
in the 10 m window, whereas CGS3 can
obtain spectra in the 16-24 m
region. Once MICHELLE is commissioned in 1999, CGS3 will be retired.
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