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Proceedings Paper

Fiber optic gyros as telescope attitude sensors
Author(s): Ian G. van Breda; Brian Culshaw
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Paper Abstract

The current state of performance of fiber-optic gyroscopes is discussed in relation to the needs of optical telescopes for tracking and setting. The principles of operation of fiber-optic gyroscopes are outlined, as well as their parameters and practical problems associated with telescope applications, such as fringe-shift measurements. Photon shot noise at the output, drift rate, and scale-factor stability are examined. Telescope configurations for an equatorial and alt-azimuth cases are discussed, along with such astronomical applications as tracking, slewing, static telescope, and field rotation. It is concluded that further improvements the fiber-optic gyroscopes will make an encoder scheme based on these devices competitive with conventionally encoded optical telescopes.

Paper Details

Date Published: 1 July 1990
PDF: 11 pages
Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990); doi: 10.1117/12.19108
Show Author Affiliations
Ian G. van Breda, Royal Greenwich Observatory (United Kingdom)
Brian Culshaw, Univ. of Strathclyde (United Kingdom)

Published in SPIE Proceedings Vol. 1235:
Instrumentation in Astronomy VII
David L. Crawford, Editor(s)

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