Wyoming prime-focus near-infrared camera

Earl J. Spillar; Paul E. Johnson; Michael Wenz; David W. Warren

doi:10.1117/12.19072

1 July 1990 Wyoming prime-focus near-infrared camera

Earl J. Spillar, Paul E. Johnson, Michael Wenz, David W. Warren

Proceedings Volume 1235, Instrumentation in Astronomy VII; (1990) https://doi.org/10.1117/12.19072
Event: SPIE Astronomical Telescopes and Instrumentation for the 21st Century, 1990, Tucson, AZ, United States

Abstract

the prime focus of the Wyoming Infrared Observatory (WIRO) 2.3-m telescope. The detector is a 64 x 64 element HgCdTe array. A microprocessor-based control board residing on the dewar clocks the CCD multiplexer, controls the double-correlated sampling, and digitizes the detector signal. All voltage levels and clocking sequences can be adjusted by software in real time. The data acquisition computer communicates with the control board over a modified RS-232 link at an adjustable rate (usually 50 kilobaud). This allows virtually any computer to be used for data acquisition with a minimum of difficulty. The optics are optimized for the study of extended sources of low surface brightness, with maximum optical throughput. The f/2 primary is followed by a liquid-nitrogen-cooled Wynne corrector and two cold-filter wheels with a capacity of 12 individual filters and a 90-degree CVF segment. The positions of the lens, the instrument, and the filter wheels are adjusted by stepper motors. The plate scale is 2.06 arcseconds per pixel.

Citation Download Citation

Earl J. Spillar, Paul E. Johnson, Michael Wenz, and David W. Warren "Wyoming prime-focus near-infrared camera", Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990); https://doi.org/10.1117/12.19072

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