Near-infrared and mid-infrared spectroscopy with the Infrared Camera (IRC) for AKARI

Youichi Ohyama, Takashi Onaka, Hideo Matsuhara, Takehiko Wada, Woojung Kim, Naofumi Fujishiro, Kazunori Uemizu, Itsuki Sakon, Martin Cohen, Miho Ishigaki, Daisuke Ishihara, Yoshifusa Ita, Hirokazu Kataza, Toshio Matsumoto, Hiroshi Murakami, Shinki Oyabu, Toshihiko Tanabé, Toshinobu Takagi, Munetaka Ueno, Fumio UsuiHidenori Watarai, Chris P. Pearson, Norihide Takeyama, Tomoyasu Yamamuro, Yuji Ikeda

Research output: Contribution to journalArticlepeer-review

101 Citations (Scopus)


The Infrared Camera (IRC) is one of the two instruments on board the AKARI satellite. In addition to deep imaging from 1.8 to 26.5 μm for the pointed observation mode of the AKARI, it has a spectroscopic capability in its spectral range. By replacing the imaging filters by transmission-type dispersers on the filter wheels, it provides low-resolution (λ/δλ ∼ 20-120) spectroscopy with slits, or in a wide imaging field-of-view (approximately 10′ × 10′). The IRC spectroscopic mode is unique for space infrared missions in that it has the capability to perform sensitive wide-field spectroscopic surveys in the near- and mid-infrared wavelength ranges. This paper describes the specifications of the IRC spectrograph and its in-orbit performance.

Original languageEnglish
Pages (from-to)S411-S422
JournalPublications of the Astronomical Society of Japan
Issue numberSPEC. ISS. 2
Publication statusPublished - 2007
Externally publishedYes


  • Infrared: general
  • Instrumentation: spectrographs
  • Space vehicles: instruments
  • Techniques: spectroscopic

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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