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Proceedings Paper

Autonomous real-time all-sky cloud detection over Mauna Kea
Author(s): William Mahoney; Glenn Morrison; Grant Matsushige
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Paper Abstract

Canada-France-Hawaii-Telescope (CFHT) Corporation operates and maintains under automation an all-sky mid-infrared (IR) camera providing the Mauna Kea community with real-time cloud detection and sky monitoring solutions. From the cloud's mid-IR black body emission detected in a medium bandwidth filter (10-12μm), time-based differentials are obtained permitting clouds to be detected for global and specific sky regions above Mauna Kea. The instrument interfaces with CFHT environmental monitors for autonomous operations and weather-induced shutdowns. Development efforts are continuing to eventually provide the following new data products: cloud cover determination, photometric quality assessment, sky and cloud brightness and color-based temperatures. The initial dataset provided by the instrument has shown to be invaluable for all modes of ground-based astronomical observing.

Paper Details

Date Published: 13 September 2012
PDF: 13 pages
Proc. SPIE 8448, Observatory Operations: Strategies, Processes, and Systems IV, 84481Y (13 September 2012); doi: 10.1117/12.926308
Show Author Affiliations
William Mahoney, Canada-France-Hawaii Telescope Corp. (United States)
Glenn Morrison, Institute for Astronomy, Univ. of Hawai'i (United States)
Canada-France-Hawaii Telescope Corp. (United States)
Grant Matsushige, Canada-France-Hawaii Telescope Corp. (United States)

Published in SPIE Proceedings Vol. 8448:
Observatory Operations: Strategies, Processes, and Systems IV
Alison B. Peck; Robert L. Seaman; Fernando Comeron, Editor(s)

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