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Proceedings Paper

LSST instrument concept
Author(s): Barry Michael Starr; Charles F. Claver; Sidney Wolff; J. Anthony Tyson; Michael P. Lesser; Larry G. Daggert; Ruben Dominguez; R. Richard Gomez; Gary P. Muller
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Paper Abstract

The LSST Instrument is a wide-field optical (0.3 to 1um) imager designed to provide a three degree field-of-view with better than 0.2 arcsecond sampling. The image surface of the LSST is approximately 55cm in diameter with a curvature radius of 25 meters to flat. The detector format is currently defined to be a circular mosaic of 568 2k × 2k devices faceted to synthesize this surface within the constraints of LSST's f/1.25 focal ratio. This camera will provide over 2.2 Gigapixels per image with a 2 second readout time. With an expected typical exposure time of as short as 10s, this will yield a nightly data set on order of 3 terapixels. The scale of the LSST Instrument is equivalent to a square mosaic of 47k × 47k. The LSST Instrument will also provide a filter mechanism, as well as optical shuttering capability. Imagers of this size pose interesting challenges in many design areas including detectors, interface electronics, data acquisition and processing pipelines, dewar construction, filter and shutter mechanisms. Further more, the LSST 3 mirror optical system places this instrument in a highly constrained volume where these challenges are compounded. Specific focus is being applied to meeting defined scientific performance requirements with an eye to total cost, system complexity, power consumption, reliability, and risk. This paper will describe the current efforts in the LSST Instrument Concept Design.

Paper Details

Date Published: 24 December 2002
PDF: 12 pages
Proc. SPIE 4836, Survey and Other Telescope Technologies and Discoveries, (24 December 2002); doi: 10.1117/12.457331
Show Author Affiliations
Barry Michael Starr, National Optical Astronomy Observatory (United States)
Charles F. Claver, National Optical Astronomy Observatory (United States)
Sidney Wolff, National Optical Astronomy Observatory (United States)
J. Anthony Tyson, Lucent Technologies/Bell Labs. (United States)
Michael P. Lesser, Steward Observatory/Univ. of Arizona (United States)
Larry G. Daggert, National Optical Astronomy Observatory (United States)
Ruben Dominguez, National Optical Astronomy Observatory (United States)
R. Richard Gomez, National Optical Astronomy Observatory (United States)
Gary P. Muller, National Optical Astronomy Observatory (United States)


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

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