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Proceedings Paper

All-sky 10-um cloud monitor on Mauna Kea
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Paper Abstract

We report an infrared all sky cloud monitor operating at Subaru telescope at Mauna Kea, Hawaii. It consists of panoramic optics and a 10 μm infrared imager. Aspheric metal mirrors coated with gold (sapphire over-coated) are used in the panoramic optics, which is similar to the MAGNUM observatory's cloud monitor at Haleakala, Maui. The imager is a commercially available non-cooled bolometer array. The system is waterproof and (almost) maintenance-free. The video signals from the imager are captured, averaged over 50 frames, subtracted clear-sky frame and flat-fielded in two minutes interval. The processed cloud images are transferred to Subaru observational software system (SOSS) and displayed combined with telescope/targets information and also stored to Subaru Telescope data archive system (STARS). The processed images will be opened on Internet web site.

Paper Details

Date Published: 4 February 2003
PDF: 6 pages
Proc. SPIE 4837, Large Ground-based Telescopes, (4 February 2003); doi: 10.1117/12.457948
Show Author Affiliations
Naruhisa Takato, Subaru Telescope/National Astronomical Observatory of Japan (United States)
Norio Okada, National Astronomical Observatory of Japan (Japan)
George Kosugi, Subaru Telescope/National Astronomical Observatory of Japan (United States)
Masahiro Suganuma, National Astronomical Observatory of Japan (Japan)
Akihiko Miyashita, Subaru Telescope/National Astronomical Observatory of Japan (United States)
Fumihiro Uraguchi, Subaru Telescope/National Astronomical Observatory of Japan (United States)


Published in SPIE Proceedings Vol. 4837:
Large Ground-based Telescopes
Jacobus M. Oschmann; Larry M. Stepp, Editor(s)

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