TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3195 SUBJECT: GRB 050408: opitcal observation DATE: 05/04/08 21:18:10 GMT FROM: Nobuyuki Kawai at Tokyo Tech D. Kuroda (JAXA/ISAS), K. Yanagisawa (OAO), and N. Kawai (Tokyo Tech) report on behalf of MITSUME collaboration: "We observed the field covering the entire error circle of GRB050408 (GCN 3189, Sakamoto et al.) with the 50 cm Mitsume Telescope at Okayama, Japan in V, R, and I bands from 17:49 to 18:32 (UT), and obtained 37 frames of 60 sec exposure. Comparison of the co-added image to the DSS revealed no new objects down to a limiting magnitude of R=17.8 as estimated using USNO A2.0 catalog."