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

Peter A. Schuller; Marc G. Lacasse; Donald S. Lydon; William H. McGonagle; Ettore Pedretti; Robert K. Reich; F. Peter Schloerb; Wesley Arthur Traub

doi:10.1117/12.552105

20 October 2004 LLiST: a new-star tracker camera for tip-tilt correction at IOTA

Peter A. Schuller, Marc G. Lacasse, Donald S. Lydon, William H. McGonagle, Ettore Pedretti, Robert K. Reich, F. Peter Schloerb, Wesley Arthur Traub

Author Affiliations +

Proceedings Volume 5491, New Frontiers in Stellar Interferometry; (2004) https://doi.org/10.1117/12.552105
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

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.

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Peter A. Schuller, Marc G. Lacasse, Donald S. Lydon, William H. McGonagle, Ettore Pedretti, Robert K. Reich, F. Peter Schloerb, and Wesley Arthur Traub "LLiST: a new-star tracker camera for tip-tilt correction at IOTA", Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); https://doi.org/10.1117/12.552105

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