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Proceedings Paper

Servo control of the movable stages using PMAC controllers for the W.M. Keck Telescope adaptive optics system
Author(s): Kevin Ho; Paul J. Stomski; Mark J. Sirota; Kevin Tsubota
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Paper Abstract

The adaptive optics system design for the W. M. Keck Telescope incorporates over twenty tracking and movable stages on the optical bench. This paper presents a commercial solution for controlling and positioning these stages. It describes the hardware system and the EPICS software interface used to communicate with the off the shelf hardware controllers. It touches on the positional accuracy and repeatability requirements and the selection of hardware to meet those requirements. It examines the cost and packaging issues and tradeoffs between developing custom hardware and software versus commercially available equipment. A method of synchronizing the stages to absolute time for telescope tracking is also presented.

Paper Details

Date Published: 26 May 1998
PDF: 11 pages
Proc. SPIE 3351, Telescope Control Systems III, (26 May 1998); doi: 10.1117/12.308803
Show Author Affiliations
Kevin Ho, California Association for Research in Astronomy (United States)
Paul J. Stomski, California Association for Research in Astronomy (United States)
Mark J. Sirota, California Association for Research in Astronomy (United States)
Kevin Tsubota, California Association for Research in Astronomy (United States)


Published in SPIE Proceedings Vol. 3351:
Telescope Control Systems III
Hilton Lewis, Editor(s)

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