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Proceedings Paper

A radiometric all-sky infrared camera (RASICAM) for DES/CTIO
Author(s): Peter M. Lewis; Howard Rogers; Rafe H. Schindler
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Paper Abstract

A novel radiometric all-sky infrared camera [RASICAM] has been constructed to allow automated real-time quantitative assessment of night sky conditions for the Dark Energy Camera [DECam] located on the Blanco Telescope at the Cerro Tololo Inter-American Observatory in Chile. The camera is optimized to detect the position, motion and optical depth of thin, high (8-10km) cirrus clouds and contrails by measuring their apparent temperature above the night sky background. The camera system utilizes a novel wide-field equiresolution catadioptic mirror system that provides sky coverage of 2π azimuth and 14-90° from zenith. Several new technological and design innovations allow the RASICAM system to provide unprecedented cloud detection and IR-based photometricity quantification. The design of the RASICAM system is presented.

Paper Details

Date Published: 19 July 2010
PDF: 12 pages
Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77353C (19 July 2010); doi: 10.1117/12.856483
Show Author Affiliations
Peter M. Lewis, SLAC National Accelerator Lab. (United States)
Howard Rogers, SLAC National Accelerator Lab. (United States)
Rafe H. Schindler, SLAC National Accelerator Lab. (United States)

Published in SPIE Proceedings Vol. 7735:
Ground-based and Airborne Instrumentation for Astronomy III
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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