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, Tsuneyoshi Kamae, Hidehiro Kaneda, Kyoko Matsushita, Keiichi Matsuzaki, Yoshitaka Saito, Yutaro Sekimoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

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) × 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.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsOswald H. Siegmund, John V. Vallerga
Pages2-12
Number of pages11
Publication statusPublished - Dec 1 1995
Externally publishedYes
EventEUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI - San Diego, CA, USA
Duration: Jul 12 1995Jul 14 1995

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2518
ISSN (Print)0277-786X

Other

OtherEUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI
CitySan Diego, CA, USA
Period7/12/957/14/95

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Tashiro, M., Makishima, K., Ezawa, H., Fukazawa, Y., Idesawa, E., Ishisaki, Y., Iyomoto, N., Kamae, T., Kaneda, H., Matsushita, K., Matsuzaki, K., Saito, Y., & Sekimoto, Y. (1995). In-orbit performance of the GIS instrument on board ASCA (ASTRO-D). In O. H. Siegmund, & J. V. Vallerga (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (pp. 2-12). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2518).