AKARI warm mission

Takashi Onaka, Hideo Matsuhara, Takehiko Wada, Daisuke Ishihara, Yoshifusa Ita, Youichi Ohyama, Takafumi Ootsubo, Shinki Oyabu, Itsuki Sakon, Takashi Shimonishi, Satoshi Takita, Toshihiko Tanabè, Fumihiko Usui, Hiroshi Murakami

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

15 Citations (Scopus)


AKARI, the Japanese satellite mission dedicated for infrared astronomy launched in 2006 February, exhausted its 180 litter liquid helium (LHe) in 2007 August. After the LHe exhaustion, the telescope and focal plane of AKARI have still been kept less than 50K by the onboard cryocooler and near-infrared (NIR) observations with the Infrared Camera (IRC) are continuing. The data reduction software optimized for the warm mission enables us to carry out efficient and sensitive observations in the NIR despite the increase of hot pixels. In particular, the NIR spectroscopic capability of the IRC provides a unique opportunity to obtain spectra in 2.5-5μm with a high sensitivity, which will not be able to be carried out with any other facilities until JWST. An overview of the AKARI warm mission is given together with the performance and some observational results taken during the warm mission.

Original languageEnglish
Title of host publicationSpace Telescopes and Instrumentation 2010
Subtitle of host publicationOptical, Infrared, and Millimeter Wave
Publication statusPublished - 2010
EventSpace Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave - San Diego, CA, United States
Duration: 2010 Jun 272010 Jul 2

Publication series

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


ConferenceSpace Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave
Country/TerritoryUnited States
CitySan Diego, CA


  • Cooled telescope
  • Infrared satellite
  • Near-infrared observations
  • Spectroscopy
  • Warm mission


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