Translator Disclaimer
7 March 2003 A Wide-Field Infrared Camera for the Palomar 200-inch Telescope
Author Affiliations +
The availability of both large aperture telescopes and large format near-infrared (NIR) detectors are making wide-field NIR imaging a reality. We describe the Wide-field Infrared Camera (WIRC), a newly commissioned instrument that provides the Palomar 200-inch telescope with such an imaging capability. WIRC features a field-of-view (FOV) of 4.33 arcminutes on a side with its currently installed 1024-square Rockwell Hawaii-I NIR detector. A 2048-square Rockwell Hawaii-II NIR detector will be installed and commissioned later this year, in collaboration with Caltech, to give WIRC an 8.7 arcminute FOV on a side. WIRC mounts at the telescope's f/3.3 prime focus. The instrument's seeing-limited optical design, optimized for the JHK atmospheric bands, includes a 4-element refractive collimator, two 7-position filter wheels that straddle a Lyot stop, and a 5-element refractive f/3 camera. Typical seeing-limited point spread functions are slightly oversampled with a 0.25 arcsec per pixel plate scale at the detector. The entire optical train is contained within a cryogenic dewar with a 2.5 day hold-time. Entrance hatches at the top of the dewar allow access to the detector without disruption of the optics and optical alignment. The optical, mechanical, cryogenic, and electronic design of the instrument are described, a commissioning science image and performance analyses are presented.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
John C. Wilson, Stephen S. Eikenberry, Charles P. Henderson, Thomas L. Hayward, Joseph Coler Carson, Bruce Pirger, Donald J. Barry, Bernhard Rainer Brandl, James R. Houck, Gregory J. Fitzgerald, and T. M. Stolberg "A Wide-Field Infrared Camera for the Palomar 200-inch Telescope", Proc. SPIE 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes, (7 March 2003);


Design study for the WIYN high-resolution infrared camera
Proceedings of SPIE (September 30 2004)
IRC (infrared camera) onboard IRIS (ASTRO-F)
Proceedings of SPIE (July 26 1999)
The infrared camera (IRC) on board the ASTRO F ...
Proceedings of SPIE (October 12 2004)
Integration and first results of the CAMCAO NIR camera
Proceedings of SPIE (June 28 2006)
WIRCam the infrared wide field camera for the Canada...
Proceedings of SPIE (September 30 2004)

Back to Top