#302, 3F, Instrument Development Building No.3 (N5; 開発棟3号館),
Mitaka Campus, National Astronomical Observatory of Japan
2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan (Details on NAOJ website)
Please visit the front gate for registration and get a card key every day.
The card key is necessary for entering the building.
When you leave the campus, please return the key at the gate every day.