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Proceedings Paper

Vista IR camera: conceptual design
Author(s): Ian Egan; Eli Atad-Ettedgui; Mark M. Casali; Simon C. Craig; Maureen A. Ellis; Peter R. Hastings; David M. Henry; Ken Laidlaw; John Murray; Malcom Stewart; Will Sutherland
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Paper Abstract

This paper describes the conceptual design for a near infrared camera for the Visible and Infrared Survey Telescope for Astronomy (VISTA). VISTA is a 4m class survey telescope that is being designed to perform pre-planned, ground-based astronomical surveys of the Southern sky from ESO's Cerro Paranal Observatory in Chile. The IR Surveys will be carried out in the J, H and Kshort wave-bands at fainter magnitudes than those produced by the current generation of survey telescopes. To maximise throughput and survey efficiency, the camera has been completely integrated with the overall optical design with the telescope mirrors providing the power and the camera optics the wavefront correction. The camera design employs a non-traditional approach to control stray light by using cryogenic baffles rather than the more traditional cold-stop approach. The very large optical field available, 1.6° diameter with a plate scale of approximately 57μm/arcsec, means that the focal plane can accommodate sixteen 2k×2k IR detectors thus forming the largest IR focal plane used in ground based astronomy to date. The 67 Mpixel focal plane will generate a significant data rate. Each exposure will comprise 270 MB and a typical night will generate 400 GB.

Paper Details

Date Published: 24 December 2002
PDF: 12 pages
Proc. SPIE 4836, Survey and Other Telescope Technologies and Discoveries, (24 December 2002); doi: 10.1117/12.458116
Show Author Affiliations
Ian Egan, UK Astronomy Technology Ctr. (United Kingdom)
Eli Atad-Ettedgui, UK Astronomy Technology Ctr. (United Kingdom)
Mark M. Casali, UK Astronomy Technology Ctr. (United Kingdom)
Simon C. Craig, UK Astronomy Technology Ctr. (United Kingdom)
Maureen A. Ellis, UK Astronomy Technology Ctr. (United Kingdom)
Peter R. Hastings, UK Astronomy Technology Ctr. (United Kingdom)
David M. Henry, UK Astronomy Technology Ctr. (United Kingdom)
Ken Laidlaw, UK Astronomy Technology Ctr. (United Kingdom)
John Murray, UK Astronomy Technology Ctr. (United Kingdom)
Malcom Stewart, UK Astronomy Technology Ctr. (United Kingdom)
Will Sutherland, Institute of Astronomy/Univ. of Cambridge (United Kingdom)


Published in SPIE Proceedings Vol. 4836:
Survey and Other Telescope Technologies and Discoveries
J. Anthony Tyson; Sidney Wolff, Editor(s)

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