Observation of Mercury's sodium tail using Fabry-Perot Interferometer

S. Kameda, M. Kagitani, S. Okano, I. Yoshikawa, J. Ono

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


We observed sodium emission from Mercury's atmosphere using a Fabry-Perot Interferometer at Haleakala Observatory on June 14, 2006. The Fabry-Perot Interferometer was used as a wavelength-tunable filter. The spectra of the surface reflection were subtracted from the observed spectra because sodium emission is contaminated by the surface reflection of Mercury. The image obtained in our observation shows the sodium exosphere extended to the anti-solar direction. The lifetime of a sodium atom was estimated to be 1.6 × 10 4 to 1.9 × 10 5 s with an error by a factor of 3-4.

Original languageEnglish
Pages (from-to)1381-1385
Number of pages5
JournalAdvances in Space Research
Issue number9
Publication statusPublished - 2008


  • Exosphere
  • Fabry-Perot Interferometer
  • Ground-based observation
  • Mercury
  • Sodium

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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