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Proceedings Paper

JASMINE: galactic structure surveyor
Author(s): Naoteru Gouda; Yukiyasu Kobayashi; Yoshiyuki Yamada; Taihei Yano; Takuji Tsujimoto; Masahiro Suganuma; Yoshito Niwa; Masahiro Yamauchi; Yasuhiro Kawakatsu; Hideo Matsuhara; Atsushi Noda; Atsuo Tsuiki; Masayoshi Utashima; Akira Ogawa
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Paper Abstract

We introduce a Japanese plan of infrared(z-band:0.9μm) space astrometry(JASMINE-project). JASMINE is the satellite (Japan Astrometry Satellite Mission for INfrared Exploration) which will measure distances and apparent motions of stars around the center of the Milky Way with yet unprecedented precision. It will measure parallaxes, positions with the accuracy of 10 micro-arcsec and proper motions with the accuracy of ~ 4microarcsec/ year for stars brighter than z=14mag. JASMINE can observe about ten million stars belonging to the bulge components of our Galaxy, which are hidden by the interstellar dust extinction in optical bands. Number of stars with σ/π < 0.1 in the direction of the Galactic central bulge is about 1000 times larger than those observed in optical bands, where π is a parallax and σ is an error of the parallax. With the completely new "map of the bulge in the Milky Way", it is expected that many new exciting scientific results will be obtained in various fields of astronomy. Presently, JASMINE is in a development phase, with a target launch date around 2015. We adopt the following instrument design of JASMINE in order to get the accurate positions of many stars. A 3-mirrors optical system(modified Korsch system)with a primary mirror of~ 0.85m is one of the candidate for the optical system. On the astro-focal plane, we put dozens of new type of CCDs for z-band to get a wide field of view. The accurate measurements of the astrometric parameters requires the instrument line-of-sight highly stability and the opto-mechanical highly stability of the payload in the JASMINE spacecraft. The consideration of overall system(bus) design is now going on in cooperation with Japan Aerospace Exploration Agency(JAXA).

Paper Details

Date Published: 15 June 2006
PDF: 9 pages
Proc. SPIE 6265, Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter, 626542 (15 June 2006); doi: 10.1117/12.670911
Show Author Affiliations
Naoteru Gouda, National Astronomical Observatory of Japan (Japan)
Yukiyasu Kobayashi, National Astronomical Observatory of Japan (Japan)
Yoshiyuki Yamada, Kyoto Univ. (Japan)
Taihei Yano, National Astronomical Observatory of Japan (Japan)
Takuji Tsujimoto, National Astronomical Observatory of Japan (Japan)
Masahiro Suganuma, National Astronomical Observatory of Japan (Japan)
Yoshito Niwa, National Astronomical Observatory of Japan (Japan)
Masahiro Yamauchi, Univ. of Tokyo (Japan)
Yasuhiro Kawakatsu, Japan Aerospace Exploration Agency (Japan)
Hideo Matsuhara, Japan Aerospace Exploration Agency (Japan)
Atsushi Noda, Japan Aerospace Exploration Agency (Japan)
Atsuo Tsuiki, Japan Aerospace Exploration Agency (Japan)
Masayoshi Utashima, Japan Aerospace Exploration Agency (Japan)
Akira Ogawa, Japan Aerospace Exploration Agency (Japan)

Published in SPIE Proceedings Vol. 6265:
Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter
John C. Mather; Howard A. MacEwen; Mattheus W. M. de Graauw, Editor(s)

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