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Proceedings Paper

Preflight performance measurements of a monolithic Ge:Ga array detector for the Far-Infrared Surveyor onboard ASTRO-F
Author(s): Mai Shirahata; Shuji Matsuura; Shin'ichiro Makiuti; Mikhail A. Patrashin; Hidehiro Kaneda; Takao Nakagawa; Mikio Fujiwara; Yasuo Doi; Mitsunobu Kawada; Takanori Hirao; Toyoki Watabe; Hiroshi Shibai
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Paper Abstract

We present pre-flight performance of a monolithic Ge:Ga array detector for Far-Infrared Surveyor (FIS) onboard the ASTRO-F satellite. The primary purpose of the ASTRO-F mission is to perform an all-sky survey in four photometric bands form 50-200 um. For shorter half of this spectral range, 50-110 um, we have developed the monolithic Ge:Ga array which is directly connected to a cryogenic readout electronics (CRE) with the indium-bump technology. In order to investigate the point-source detectability in the survey observation, we carry out a simulation experiment. The experiment was done by taking a image of moving pinholes located on the focal plane of the FIS optics. A clear image without any distortion was obtained, but the size of point source image is slightly larger than expected. We estimate the detection limit in the survey observation by taking account of all detector properties including the imaging performance. The results show that the detector sensitivity is sufficiently high to meet the requirement of the ASTRO-F mission.

Paper Details

Date Published: 12 October 2004
PDF: 12 pages
Proc. SPIE 5487, Optical, Infrared, and Millimeter Space Telescopes, (12 October 2004); doi: 10.1117/12.551104
Show Author Affiliations
Mai Shirahata, ISAS/Japan Aerospace Exploration Agency (Japan)
Univ. of Tokyo (Japan)
Shuji Matsuura, ISAS/Japan Aerospace Exploration Agency (Japan)
Shin'ichiro Makiuti, ISAS/Japan Aerospace Exploration Agency (Japan)
Mikhail A. Patrashin, ISAS/Japan Aerospace Exploration Agency (Japan)
Hidehiro Kaneda, ISAS/Japan Aerospace Exploration Agency (Japan)
Takao Nakagawa, ISAS/Japan Aerospace Exploration Agency (Japan)
Mikio Fujiwara, National Institute of Information and Communications Technology (Japan)
Yasuo Doi, Univ. of Tokyo (Japan)
Mitsunobu Kawada, Nagoya Univ. (Japan)
Takanori Hirao, Nagoya Univ. (Japan)
Toyoki Watabe, Nagoya Univ. (Japan)
Hiroshi Shibai, Nagoya Univ. (Japan)

Published in SPIE Proceedings Vol. 5487:
Optical, Infrared, and Millimeter Space Telescopes
John C. Mather, Editor(s)

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