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Proceedings Paper

Real-time control system for the Keck Interferometer Nuller: methods and maintenance
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Paper Abstract

The real-time control system for the Keck Interferometer Nuller provides the N-band fringe tracking capabilities of the instrument, as well as correcting for atmospheric dispersion in the system. There are three closed-loop servos for controlling the N-band path, as well as two K-band servos which provide open-loop control. A system of synchronized "gates" allows all N-band fringe trackers to operate simultaneously, making it possible to interleave servo corrections with data collection. Several methods of improving servo performance and maintenance of control schemes are discussed.

Paper Details

Date Published: 27 June 2006
PDF: 10 pages
Proc. SPIE 6274, Advanced Software and Control for Astronomy, 62740K (27 June 2006); doi: 10.1117/12.670618
Show Author Affiliations
Jean I. Garcia, Jet Propulsion Lab. (United States)
M. Mark Colavita, Jet Propulsion Lab. (United States)
Andrew J. Booth, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 6274:
Advanced Software and Control for Astronomy
Hilton Lewis; Alan Bridger, Editor(s)

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