The observational response of MAXI onboard ISS

Naoki Isobe*, Masaru Matsuoka, Shiro Ueno, Hiroshi Tomida, Kazuyoshi Kawasaki, Haruyoshi Katayama, Tatehiro Mihara, Mitsuhiro Kohama, Ikuya Sakurai, Motoki Nakajima, Nobuyuki Kawai, Jun Kataoka, Atsumasa Yoshida, Daiki Takahashi, Masami Uzawa, Hiroshi Tsunemi, Emi Miyata, Isao Tanaka

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

9 Citations (Scopus)


The current status is reported of the development of Monitor of All-sky X-ray Image and the measurement of its observational response. MAXI is a scanning X-ray camera to be attached to the Japanese Experiment Module of the International Space Station in 2008. MAXI is mainly composed of two kinds of instruments, GSC which is sensitive to the 2 - 30 keV photons, and SSC to the 0.5 - 10 keV ones. As an X-ray all-sky monitor, MAXI has an unprecedented sensitivity of 7 mCrab in one orbit scan, and 1 mCrab in one week. Using the engineering mode of the proportional counter and of the collimator for GSC, the observational response of GSC is extensively measured. The acceptable performances are obtained as a whole for both the collimator and the counter. The engineering models of the other part of MAXI are also constructed and the measurement of their performance is ongoing.

Original languageEnglish
Pages (from-to)354-365
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2004
Externally publishedYes
EventX-Ray and Gamma-Ray Instrumentation for Astronomy XIII - San Diego, CA, United States
Duration: 2003 Aug 32003 Aug 5


  • All sky monitor
  • GSC
  • International Space Station
  • MAXI
  • Observational response
  • SSC
  • X-Ray

ASJC Scopus subject areas

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


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