Bisei Astronomical Observatory

Located on a hill in Bisei, Ibara City, Okayama Prefecture, Bisei Astronomical Observatory is a public observatory where visitors can observe celestial objects and explore exhibits about space both day and night. In 2021, Bisei became the first community in Asia to be certified as an International Dark Sky Community, and ongoing efforts are being made to preserve its starry skies.

The centerpiece of Bisei Astronomical Observatory, which opened in 1993, is a reflecting telescope with a 101 cm aperture. On clear nights, visitors can observe seasonal celestial objects such as lunar craters, Saturn’s rings, and Jupiter with guidance from expert staff. Stargazing sessions using large binoculars and other equipment are also held on the observation deck beside the dome, offering views of the night sky overhead.

Inside the observatory, the Star Wall displays astronomical photographs and videos of space. The 4D2U 3D visualization system provides an opportunity to learn about the structure of the universe and the movement of celestial bodies. On clear days, visitors may also be able to observe first-magnitude stars during daylight hours. Even in poor weather, they can explore video exhibits and attend informative presentations. Seasonal astronomy events offer different perspectives on the universe depending on the time of year.