Other
Scientific paper
Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982spie..332...33u&link_type=abstract
IN: International Conference on Advanced Technology Optical Telescopes, Tucson, AZ, March 11-13, 1982, Proceedings (A83-30976 13
Other
1
Infrared Telescopes, Pointing Control Systems, Tracking (Position), Accuracy, Design Analysis, Dynamic Models, Instrument Errors, Servomechanisms
Scientific paper
The Multiple Mirror Telescope (MMT) has an absolute pointing accuracy of about one arc second RMS, which is considerably better than that of other telescopes. This paper discusses the characteristics of the telescope and pointing control system which may be of interest to telescope designers. Examination of known problems indicates that further improvements are possible. The MMT is exposed to large thermal radiation and wind loads because of the exposure allowed by the compact enclosure design. A theoretical analysis of the mount tracking servo system has been used to optimize the resistance to wind buffeting. The combination of mechanical and electronic servo system improvements and small, fixed wind baffles covering the yoke arms has obviated the need for a conventional windscreen.
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