Development of an extreme ultraviolet imaging spectrometer for the BepiColombo mission

I. Yoshikawa, A. Yamazaki, T. Murachi, S. Kameda, H. Sagawa, S. Okano, T. Okada, M. Nakamura

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Extreme and far ultraviolet imaging spectrometers are proposed for the low-altitude orbiter of the BepiColombo mission. The UV instrument, consisting of the two spectrometers with common electronics, aims at measuring (1) emission lines from molecules, atoms and ions present in the Mercury's tenuous atmosphere and (2) the reflectance spectrum of Mercury's surface. The instrument pursues a complete coverage in UV spectroscopy. The extreme UV spectrometer covers the spectral range of 30-150 nm with the field of view of 5.0°, and the spectrum from 130 to 430 nm is obtained by the far UV spectrometer. The extreme UV spectrometer employs multi-layer coating technology to enhance its sensitivity at particular emission lines. This technology enables us to identify small ionospheric signatures such as He II (30.4 nm) and Na II (37.2 nm), which could not be detected with conventional optics.

Original languageEnglish
Pages (from-to)2195-2199
Number of pages5
JournalAdvances in Space Research
Issue number12
Publication statusPublished - 2004
Externally publishedYes


  • EUV
  • Mercury
  • Spectrometer

ASJC Scopus subject areas

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences(all)


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