Due to railway construction, the network to the NAOJ Mitaka Campus, and therefore to SMOKA, will be unavailable from 2:00 to 4:00 on March 6, 2026 (JST). We apologize for the inconvenience (February 24, 2026).


SMOKA account registered before 31 March 2026 **will** be expired on 31 March 2026. Please register again via Online User Registration **on and after** 09:00 (JST) or 00:00 (UT) on April 1, 2026, if you wish to continue using SMOKA after April 2026. (March 3, 2026)