Kiso Observatory

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Kiso Observatory
Organization University of Tokyo
Observatory code 381
Location Mt. Ontake, Nagano Prefecture
Coordinates 35°47′39″N 137°37′42″E / 35.79417°N 137.62833°E / 35.79417; 137.62833Coordinates: 35°47′39″N 137°37′42″E / 35.79417°N 137.62833°E / 35.79417; 137.62833
Altitude 1,130 m (3,710 ft)
Established 1974
Unnamed 105 cm Schmidt telescope
K.3T 30 cm robotic telescope

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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