Saku-shi, Nagano Usuda Deep Space Center

The Usuda Deep Space Center was established in Usuda Town, Nagano Prefecture (Now Saku City from Apr. 2005), in 1984, as an affiliated facility of the former Institute of Space and Astronautical Science (ISAS).
The Center conducts command operations and receives data from deep space probes which observe planets and comets. The remote location of the Center was chosen carefully to reduce noise from towns, allowing for the reception of faint and subtle signals from space.
The main facility is a large parabolic antenna (64m-dia., 1980t.). X-band communications (8 GHz) are used for with deep space probes, while S-band (2 GHz) and X-band (for receiving only) are used for other probes. In addition to the Center, only NASA (U.S.A.), ESA (Europe), and IKI (Russia) own parabolic mirrors of this size.


1831-6 Omagari, Kamiodagiri, Saku-shi, Nagano 384-0306



Tours and Exhibits


Phone +81-267-81-1230
Fax +81-267-81-1234


Open 10:00 a.m. to 4:00 p.m.
Closed daily.(some exceptions)
* Free admission


  • Free parking lot for 12 passenger cars and for two large-sized cars (Please consult us.)
  • Wheel chairs and baby strollers can enter the exhibition hall.
  • One rental wheel chair is available (free of charge.)
  • You can bring your own lunch to eat outside of the buildings (No eating is allowed in other areas.)
  • Pets are allowed to enter the center but not in the buildings
    No pets are allowed to enter the exhibition hall except a seeing-eye dog or a service dog.


The Usuda Center offers an introduction to the antenna system and also has a 5.5 billionths-scale model of the solar system displayed along the route between the entrance of the Center and the other buildings. Remember that the distance between Tokyo and Osaka is only 0.1mm according to the model measurement. Enjoy a tour of the solar system on foot.