Kiso Observatory

Page name or Wikidata label
OrganizationUniversity of Tokyo
Observatory code 381 Edit this on Wikidata
LocationMount Ontake , Nagano Prefecture
Coordinates35°47′50″N 137°37′32″E / 35.79722°N 137.62542°E / 35.79722; 137.62542Coordinates: 35°47′50″N 137°37′32″E / 35.79722°N 137.62542°E / 35.79722; 137.62542
Altitude1,130 m (3,710 ft)
Established1974 Edit this at Wikidata
Unnamed105 cm Schmidt telescope
K.3T30 cm robotic telescope
Kiso Observatory is located in Japan
Kiso Observatory
Location of Page name or Wikidata label

Kiso Observatory (Japanese: 木曽観測所: Kiso Kansokujo) is an astronomical observatory located at Mt. Ontake in Japan. The observatory was founded in 1974, originally as a branch observatory of the Tokyo Astronomical Observatory, with the express objective of studying extra-galactic astronomical objects.[1] Since 1988, it has been maintained by the Institute of Astronomy, Faculty of Science, University of Tokyo (Japanese: 東京大学天文学教育研究センター). It is home to the 105 cm Schmidt Telescope. It is currently open for use by astronomers from all over the world.

In 2002, a 30 cm, fully automatic telescope was added with the designation K.3T (Kiso 0.3-meter Telescope). It is mainly used in the observation of variable stars. It has been automated to aid in the making of numerous repeat observations over long periods of time.[2]


  1. ^ "Overview". Kiso Observatory. Institute of Astronomy, School of Science, The University of Tokyo. Retrieved 15 April 2016.
  2. ^ "東京大学天文学教育研究センター木曽観測所". 天文台の紹介 (in Japanese). 長崎 女子短期大学. Retrieved 15 April 2016.

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