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Proceedings Paper

LLiST: a new-star tracker camera for tip-tilt correction at IOTA
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Paper Abstract

The tip-tilt correction system at the Infrared Optical Telescope Array (IOTA) has been upgraded with a new star tracker camera. The camera features a backside-illuminated CCD chip offering doubled overall quantum efficiency and a four times higher system gain compared to the previous system. Tests carried out to characterize the new system showed a higher system gain with a lower read-out noise electron level. Shorter read-out cycle times now allow to compensate tip-tilt fluctuations so that their error imposed on visibility measurements becomes comparable to, and even smaller than, that of higher-order aberrations.

Paper Details

Date Published: 20 October 2004
PDF: 10 pages
Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); doi: 10.1117/12.552105
Show Author Affiliations
Peter A. Schuller, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Marc G. Lacasse, Fred Lawrence Whipple Observatory (United States)
Donald S. Lydon, Univ. of Massachusetts/Amherst (United States)
William H. McGonagle, MIT Lincoln Lab. (United States)
Ettore Pedretti, Univ. of Michigan (United States)
Robert K. Reich, MIT Lincoln Lab. (United States)
F. Peter Schloerb, Univ. of Massachusetts/Amherst (United States)
Wesley Arthur Traub, Harvard-Smithsonian Ctr. for Astrophysics (United States)

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

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