Tracking a 150 ton altitude-azimuth telescope to sub-arcsecond accuracy.

Details Tracking a 150 ton altitude-azimuth telescope to sub-arcsecond accuracy. Tracking a 150 ton altitude-azimuth telescope to sub-arcsecond accuracy.

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987spie..748...17b&link_type=abstract

Proc. SPIE Int. Soc. Opt. Eng., Vol. 748, p. 17 - 24

Computer Science

Mmt:Control Systems

Scientific paper

The Multiple Mirror Telescope is a 150 ton optical instrument composed of an array of six 1.8 m diameter folded Cassegrain telescopes. A mount for the array uses conventional ball bearings and gear trains. A computer-controlled servo system uses a 26-bit absolute encoder and associated electronics to achieve an all-sky pointing accuracy approaching 1.0 arcsecond RMS, and a tracking accuracy approaching 0.1 arcsecond RMS.

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