Access to SMOKA will be unavailable for five minutes between 21:00 and 24:00 on 19 March (JST) due to maintenance work by the NAOJ network division.
We apologize for the inconvenience (March 12, 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)