skip to main content

Title: A Radiometric All-Sky Infrared Camera (RASICAM) for DES/CTIO

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 2{pi} azimuth and 14-90{sup o} 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.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
992970
Report Number(s):
SLAC-PUB-14148
TRN: US201023%%48
DOE Contract Number:
AC02-76SF00515
Resource Type:
Conference
Resource Relation:
Conference: Presented at SPIE Astronomical Instrumentation, San Diego, California, 27 June -2 July 2010
Research Org:
SLAC National Accelerator Laboratory (SLAC)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CAMERAS; CHILE; INFRARED RADIATION; CLOUDS; DESIGN; DETECTION; NIGHT SKY; TELESCOPES; TEMPERATURE MEASUREMENT Astrophysics,INST, OPTICS