In-orbit performance of the GIS instrument on board ASCA (ASTRO-D)

Makoto Tashiro; Kazuo Makishima; Hajime Ezawa; Yasushi Fukazawa; Eriko Idesawa; Yoshitaka Ishisaki; Naoko Iyomoto; Tuneyoshi Kamae; Hidehiro Kaneda; Kyoko Matsushita; Keiichi Matsuzaki; Yoshitaka Saito; Yutaro Sekimoto; Takayuki Tamura; Masaharu Hirayama; Manabu Ishida; Hidetoshi Kubo; Kyoko Okada; Tadayuki Takahashi; Yoshihiro Ueda; Koichi Kikuchi; Takaya Ohashi; Noriko Y. Yamasaki; Yoshiki Kohmura; Yasushi Ikebe; Tatehiro Mihara; Takeshi G. Tsuru; K. Ebisawa; Shuichi Gunji

doi:10.1117/12.218370

1 September 1995 In-orbit performance of the GIS instrument on board ASCA (ASTRO-D)

Makoto Tashiro, Kazuo Makishima, Hajime Ezawa, Yasushi Fukazawa, Eriko Idesawa, Yoshitaka Ishisaki, Naoko Iyomoto, Tuneyoshi Kamae, Hidehiro Kaneda, Kyoko Matsushita, Keiichi Matsuzaki, Yoshitaka Saito, Yutaro Sekimoto, Takayuki Tamura, Masaharu Hirayama, Manabu Ishida, Hidetoshi Kubo, Kyoko Okada, Tadayuki Takahashi, Yoshihiro Ueda, Koichi Kikuchi, Takaya Ohashi, Noriko Y. Yamasaki, Yoshiki Kohmura, Yasushi Ikebe, Tatehiro Mihara, Takeshi G. Tsuru, K. Ebisawa, Shuichi Gunji

Author Affiliations +

Proceedings Volume 2518, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI; (1995) https://doi.org/10.1117/12.218370
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

The fourth Japanese x-ray astronomy satellite, ASCA, carries two imaging gas scintillation proportional counters (GIS) on its focal plane. Extensive ground calibration has established its position resolution to be 0.5 mm and FWHM energy resolution to be 8.0% both at 6 keV. When combined with the x-ray telescope, a sensitivity range becomes 0.7 - 10 keV. These properties have been confirmed through in-orbit calibrations. The in-orbit background of the GIS has been confirmed to be as low as (5 - 7) X 10^-4 c s^-1cm^-2keV^-1 over the 1 - 10 keV range. The long-term detector gain is stable within a few % for two years. Gain dependence on the position and temperature has been calibrated down to 1%. The overall energy response is calibrated very accurately. Thus the GIS is working as an all-round cosmic x-ray detector.

Citation Download Citation

Makoto Tashiro, Kazuo Makishima, Hajime Ezawa, Yasushi Fukazawa, Eriko Idesawa, Yoshitaka Ishisaki, Naoko Iyomoto, Tuneyoshi Kamae, Hidehiro Kaneda, Kyoko Matsushita, Keiichi Matsuzaki, Yoshitaka Saito, Yutaro Sekimoto, Takayuki Tamura, Masaharu Hirayama, Manabu Ishida, Hidetoshi Kubo, Kyoko Okada, Tadayuki Takahashi, Yoshihiro Ueda, Koichi Kikuchi, Takaya Ohashi, Noriko Y. Yamasaki, Yoshiki Kohmura, Yasushi Ikebe, Tatehiro Mihara, Takeshi G. Tsuru, K. Ebisawa, and Shuichi Gunji "In-orbit performance of the GIS instrument on board ASCA (ASTRO-D)", Proc. SPIE 2518, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI, (1 September 1995); https://doi.org/10.1117/12.218370

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