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Proceedings Paper

Keck Interferometer autoaligner: algorithms and techniques
Author(s): Michael A. Hrynevych; Kevin Tsubota; Robert F. Smythe; Wayne Dahl; James Bell; M. Mark Colavita; John Gathright; Forrest Meggars; Christopher R. Neyman; Andy C. Rudeen; Gerard Theodore van Belle; Peter L. Wizinowich
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Paper Abstract

The Keck Interferometer includes an autoalignment system consisting of pop-up targets located at strategic locations along the beam trains of each arm of the instrument along with a sensor and control system. We briefly describe the hardware of the system and then proceed to a description of the two operational modes of the system. These are: 1) to provide an initial alignment of the coude paths in each arm, and 2) to recover coude alignments between changes of the static delay sled positions. For the initial alignment mode, we review the system performance requirements along with the software used for image acquisition and centroiding. For coudé alignment recovery, we describe beam-train surveys through the static delay (Long Delay Line) and criteria for a successful recovery of a coudé alignment. Finally, we describe the results of testing of the autoalignment system.

Paper Details

Date Published: 20 October 2004
PDF: 7 pages
Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); doi: 10.1117/12.552417
Show Author Affiliations
Michael A. Hrynevych, W.M. Keck Observatory (United States)
Kevin Tsubota, W.M. Keck Observatory (United States)
Robert F. Smythe, Jet Propulsion Lab. (United States)
Wayne Dahl, W.M. Keck Observatory (United States)
James Bell, W.M. Keck Observatory (United States)
M. Mark Colavita, Jet Propulsion Lab. (United States)
John Gathright, W.M. Keck Observatory (United States)
Forrest Meggars, W.M. Keck Observatory (United States)
Christopher R. Neyman, W.M. Keck Observatory (United States)
Andy C. Rudeen, W.M. Keck Observatory (United States)
Gerard Theodore van Belle, California Institute of Technology (United States)
Peter L. Wizinowich, W.M. Keck Observatory (United States)

Published in SPIE Proceedings Vol. 5491:
New Frontiers in Stellar Interferometry
Wesley A. Traub, Editor(s)

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