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Ultraviolet imager on Venus orbiter Akatsuki and its initial results.
Yamazaki, Atsushi; Yamada, Manabu; Lee, Yeon Joo; Watanabe, Shigeto; Horinouchi, Takeshi; Murakami, Shin-Ya; Kouyama, Toru; Ogohara, Kazunori; Imamura, Takeshi; Sato, Takao M; Yamamoto, Yukio; Fukuhara, Tetsuya; Ando, Hiroki; Sugiyama, Ko-Ichiro; Takagi, Seiko; Kashimura, Hiroki; Ohtsuki, Shoko; Hirata, Naru; Hashimoto, George L; Suzuki, Makoto; Hirose, Chikako; Ueno, Munetaka; Satoh, Takehiko; Abe, Takumi; Ishii, Nobuaki; Nakamura, Masato.
Afiliación
  • Yamazaki A; 1Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 Japan.
  • Yamada M; 2Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan.
  • Lee YJ; 3Planetary Exploration Research Center (PERC), Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba 275-0016 Japan.
  • Watanabe S; 1Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 Japan.
  • Horinouchi T; 4Present Address: Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561 Japan.
  • Murakami SY; 5Hokkaido Information University, 59-2 Nishinopporo, Ebetsu, Hokkaido 069-8585 Japan.
  • Kouyama T; 6Faculty of Environmental Earth Science, Hokkaido University, N10W5, Sapporo, Hokkaido 060-0810 Japan.
  • Ogohara K; 1Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 Japan.
  • Imamura T; 7Artificial Intelligence Research Center, National Institute of Advanced Industrial Science and Technology, 2-3-26 Aomi, Koto-ku, Tokyo, 135-0064 Japan.
  • Sato TM; 8School of Engineering, University of Shiga Prefecture, 2500 Hassaka-cho, Hikone, Shiga 522-8533 Japan.
  • Yamamoto Y; 9Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561 Japan.
  • Fukuhara T; 1Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 Japan.
  • Ando H; 1Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 Japan.
  • Sugiyama KI; 10Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo, 171-8501 Japan.
  • Takagi S; 11Faculty of Science, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto, Kyoto 603-8555 Japan.
  • Kashimura H; 12Department of Information Engineering, National Institute of Technology, Matsue College, 14-4 Nishi-Ikuma, Matsue, Shimane 690-8518 Japan.
  • Ohtsuki S; 13Research and Information Center, Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa 259-1292 Japan.
  • Hirata N; 14Present Address: Hokkaido University, N10W5, Sapporo, Hokkaido 060-0810 Japan.
  • Hashimoto GL; 15Department of Planetology/Center for Planetary Science, Kobe University, 7-1-48, Minamimachi, Minatojima Chuo-ku, Kobe, 650-0047 Japan.
  • Suzuki M; School of Commerce, Senshu University, 2-1-1 Higashimita, Tama-ku, Kawasaki, Kabagawa 214-8580 Japan.
  • Hirose C; 17School of Computer Science and Engineering, The University of Aizu, 90 Kami-Iawase, Tsuruga, Ikki-machi, Aizu-Wakamatsu, Fukushima 965-8580 Japan.
  • Ueno M; 18Department of Earth Science, Okayama University, 3-1-1 Tsushimanaka, Kita, Okayama 700-8530 Japan.
  • Satoh T; 1Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 Japan.
  • Abe T; 1Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 Japan.
  • Ishii N; 19Center for Planetary Science (CPS), Graduate School of Science, Kobe University, 7-1-48 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047 Japan.
  • Nakamura M; 1Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 Japan.
Earth Planets Space ; 70(1): 23, 2018.
Article en En | MEDLINE | ID: mdl-31983883
ABSTRACT
The ultraviolet imager (UVI) has been developed for the Akatsuki spacecraft (Venus Climate Orbiter mission). The UVI takes ultraviolet (UV) images of the solar radiation reflected by the Venusian clouds with narrow bandpass filters centered at the 283 and 365 nm wavelengths. There are absorption bands of SO2 and unknown absorbers in these wavelength regions. The UV images provide the spatial distribution of SO2 and the unknown absorber around cloud top altitudes. The images also allow us to understand the cloud top morphologies and haze properties. Nominal sequential images with 2-h intervals are used to understand the dynamics of the Venusian atmosphere by estimating the wind vectors at the cloud top altitude, as well as the mass transportation of UV absorbers. The UVI is equipped with off-axial catadioptric optics, two bandpass filters, a diffuser installed in a filter wheel moving with a step motor, and a high sensitivity charge-coupled device with UV coating. The UVI images have spatial resolutions ranging from 200 m to 86 km at sub-spacecraft points. The UVI has been kept in good condition during the extended interplanetary cruise by carefully designed operations that have maintained its temperature maintenance and avoided solar radiation damage. The images have signal-to-noise ratios of over 100 after onboard desmear processing.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Earth Planets Space Año: 2018 Tipo del documento: Article
Texto completo
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PubMed Links
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Earth Planets Space Año: 2018 Tipo del documento: Article