Site testing at Dome Fuji for submillimeter and terahertz astronomy: 220 GHz atmospheric-transparency |
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| Institution: | 1. Institute of Physics, University of Tsukuba, 1-1-1 Ten-nodai, Tsukuba, Ibaraki 305-8571, Japan;2. Mizusawa VERA Observatory, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan;3. National Institute of Polar Research, 10-3 Midoricho, Tachikawa, Tokyo 190-8518, Japan;4. Department of Physics, College of Science, Rikkyo University, 3-34-1 Nishiikebukuro, Toshima, Tokyo 171-8, Japan |
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| Abstract: | We measured the 220 GHz atmospheric-transparency at the Dome Fuji station in Antarctica from 18 December 2006 to 14 January 2007 using a tipping radiometer. The mean optical depth at zenith was 0.045 ± 0.007, and during 98% of this period we measured an optical depth of less than 0.06. These data indicate that the atmospheric-transparency in summer at Dome Fuji is comparable to that of well-known submillimeter astronomical sites such as the Atacama desert in Chile in their best seasons. |
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