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The NAOJ Mitaka Campus serves as the headquarters for the National Astronomical Observatory of Japan (NAOJ). It is a vital center for astronomical research, overseeing observation facilities both domestically and internationally, developing new observational instruments, and providing education for graduate students. The campus also hosts research and educational facilities for the Graduate University for Advanced Studies (SOKENDA) and the University of Tokyo, making it a significant academic hub.
For the general public, certain areas of the campus can be visited without prior reservation. Additionally, the campus hosts regular or occasional events utilizing telescopes and a digital theater to bring the wonders of the universe closer to visitors. It is a truly precious location where you can experience the very front lines of astronomical research and technological development.
The Mitaka Campus has a history deeply intertwined with the development of astronomy in Japan. The grounds include architectural structures from the Taisho and Showa eras, some of which are designated as Registered Tangible Cultural Properties of Tokyo. Beyond being a research facility, it holds significant cultural value as a symbol of Japan's scientific and technological progress.
Furthermore, the campus is responsible for duties related to the 'Ephemeris Calculation Room,' working alongside the National Institute of Information and Communications Technology (NICT) to perform highly precise tasks, such as determining leap seconds using data from facilities like the Mizusawa VLBI Observatory. This reflects a long history of high-level scientific operations that support the very standards of time used in daily life.

The campus features various facilities and exhibits related to astronomy. During special events, the digital theater offers immersive experiences regarding the vastness of space and astronomical knowledge. The campus also houses the Astronomical Information Center, which serves as a contact point for astronomical discoveries and professional inquiries.
Visitor areas are limited to specific sections of the campus. By checking the provided maps, you can understand the layout of the various facilities. During irregular public events, you may encounter exhibits involving telescopes or the latest astronomical technologies.
Activities at the NAOJ Mitaka Campus primarily take place during daylight hours. When specific public events or programs are held, such as digital theater screenings or astronomical exhibitions, it is important to check the official website in advance for the schedule. Regardless of the season, the environment is well-equipped for you to engage with fundamental astronomical knowledge and the latest research results.

During your visit, you may be able to use materials such as 'Observation Worksheets' designed for elementary school students (availability subject to change). These tools help deepen your understanding of astronomy and the role of the NAOJ from a practical perspective. Additionally, the campus ground is available for general use, though it requires a reservation and a fee. The site offers a unique coexistence of a solemn research atmosphere and an open scientific space for the community.
The Mitaka Campus is located in Mitaka City, Tokyo. It is easily accessible via bus routes from stations such as Musashi-Sakai, Chofu, Mitaka, Musashi-Koganei, and Komae. The surrounding area features many residential neighborhoods, cafes, and parks, making it a pleasant place to relax after gaining new astronomical insights.

When visiting, please keep the following in mind: