Sky clearness at Oma Tibet Toshiyuki Sasaki NAOJ Yongqiang Yao NAOC Michitoshi Yoshida HiroshimaU Norio Ohshima Yoshitaka Mikami Norio Okada Hisashi Koyanao Kazuhiro ID: 239996
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Slide1
A China-Japan Collaborative Site Survey in west Tibet
Sky clearness at Oma, Tibet
Toshiyuki Sasaki (NAOJ), Yongqiang Yao (NAOC), Michitoshi Yoshida (Hiroshima-U), Norio Ohshima, Yoshitaka Mikami, Norio Okada, Hisashi Koyanao, Kazuhiro Sekiguchi (NAOJ), Liyong Liu, Lin Li (NAOC)
A site in west Tibet is in an important location for global astronomical observation network
Instruments at
Oma
site
sites in west China;
Karasu and Oma
Cloud Monitor camera
Weather station andBarometer
CT2 sensor on 40m tower
Sky image taken w/ Cloud Monitor
(slide#1)
N
E
S7P10Slide2
Clear sky ratios at
Oma
, except summer monsoon season, are around 70%, which are comparable to at Mauna Kea, Hawaii, and much bettre than at Okayama, Japan.
S7P10: A China-Japan Collaborative Site Survey in west Tibet: Sky clearness at Oma, Tibet (Sasaki et al.)
(slide#2)