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arXiv · astro-ph/0408038

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

P. A. Schuller·M. G. Lacasse·D. Lydon·W. H. McGonagle·E. Pedretti·R. K. Reich·F. P. Schloerb·W. A. Traub
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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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P. A. Schuller, M. G. Lacasse, D. Lydon, W. H. McGonagle, E. Pedretti, R. K. Reich, F. P. Schloerb, W. A. Traub. 2004-08-03. LLiST - a new star tracker camera for tip-tilt correction at IOTA. https://doi.org/10.1117/12.552105

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