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

Jean I. Garcia; M. Mark Colavita; Andrew J. Booth

doi:10.1117/12.670618

27 June 2006 Real-time control system for the Keck Interferometer Nuller: methods and maintenance

Jean I. Garcia, M. Mark Colavita, Andrew J. Booth

Proceedings Volume 6274, Advanced Software and Control for Astronomy; 62740K (2006) https://doi.org/10.1117/12.670618
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

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.

Citation Download Citation

Jean I. Garcia, M. Mark Colavita, and Andrew J. Booth "Real-time control system for the Keck Interferometer Nuller: methods and maintenance", Proc. SPIE 6274, Advanced Software and Control for Astronomy, 62740K (27 June 2006); https://doi.org/10.1117/12.670618

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