Japan Geoscience Union Meeting 2016

Presentation information


Symbol P (Space and Planetary Sciences) » P-CG Complex & General

[P-CG21] Planetary atmosphere, ionosphere and magnetosphere

Thu. May 26, 2016 3:30 PM - 4:45 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Takeshi Imamura(Japan Aerospace Exploration Agency, Institute of Space and Astronautical Science), Yukihiro Takahashi(Department of Cosmosciences, Graduate School of Science, Hokkaido University), Yoshiyuki O. Takahashi(Graduate School of Science, Kobe University), Keiichiro Fukazawa(Academic Center for Computing and Media Studies, Kyoto University), Hiromu Nakagawa(Planetary Atmosphere Physics Laboratory, Department of Geophysics, Graduate School of Science, Tohoku University)

3:30 PM - 4:45 PM

[PCG21-P04] Development of Fiber IFU for Venus Cloud Tops

*Manabu Yamada1, Masato Kagitani3, Atsushi Yamazaki2 (1.Planetary Exploration Research Center, Chiba Institute of Technology, 2.Institute of Space and Astronautical Science / Japan Aerospace Exploration Agency, 3.Planetary Plasma and Atmospheric Research Center, Graduate School of Science, Tohoku University)

Keywords:Fiber integral field units, Ultraviolet observation, Venus atmosphere

Venus cloud absorbs solar radiation at wavelength between 200nm and 500nm. The absorption of wavelength between 200nm and 320nm is well explained by SO2 at the cloud tops, but the absorption at longer wavelength has not been identified yet. The comparison between the spatial features of different wavelength may clarify number of unknown-absorbers, but only one bandpass filter or one wideband filter with transmittance around 365nm has been used by telescopes and instruments of previous observation.
We are developing a spectrum imaging instrument using fiber array. Spectrum imaging can take several images of different wavelength at same time, and it is suitable for studying the UV-blue absorber of Venus. We thought a new manufacturing method of a fiber array with several hundred of fiber with diameter of ~100μm, and improvement has been added to the method for practical use. Optics using the fiber array are designed for Haleakala 60-cm. We will report performance of our instrument and plan to observation of Venus.