Campuses

Subaru Telescope Okayama Branch

formerly Okayama Astrophysical Observatory

Credit: NAOJ

Subaru Telescope Okayama Branch (formerly the Okayama Astrophysical Observatory) is on the summit of Mt. Chikurinji in Okayama. The site has been the center of optical and infrared astronomy research in Japan for over 60 years. The 188-cm reflector telescope, one of the largest reflectors in Japan, is operated here in addition to the 91-cm and 50-cm reflector telescopes.

Visitors can enter the 188-cm telescope dome and view the telescope through glass windows, as well as view panels there introducing the research being conducted. They can also enjoy panoramic views of the cityscape of Asakuchi and the Seto Inland Sea.

On March 31, 2018, Okayama Astrophysical Observatory completed its mission and became the "Subaru Telescope Okayama Branch." Consequently, NAOJ discontinued the public opening of the observatory, but the Okayama Astronomical Museum took over it and continues the opening to this day.

188-cm Reflector Telescope
Credit: NAOJ

Access

  • 3037-5, Honjo, Kamogata, Asakuchi, Okayama 719-0232, Japan
  • +81-865-44-2155
  • There is no public transportation to the observatory.

Public Visitor Information

Opening Hours
9:00 a.m. to 4:30 p.m.
Website
Subaru Telescope Okayama Branch (Japanese only)

Okayama Astronomical Museum

Okayama Astronomical Museum
Credit: NAOJ

Okayama Astronomical Museum, managed by Asakuchi City, is located next to Okayama Astrophysical Observatory. Please combine your visit to Okayama Astrophysical Observatory with a visit to this museum.

Open Hours
9:00 a.m. to 4:30 p.m. (Please check the days it is closed at the Okayama Astronomical Museum website.)
Main Facilities / Exhibits
Planetarium, 4D2U Theater, Solar Observation Room, Exhibition Room, etc.
Website
Okayama Astronomical Museum (Japanese only)

Subaru Telescope Okayama Branch Website

Explore the latest news and project updates on the official website (in Japanese only).

Go to the Website

Subaru Telescope Okayama Branch Website

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