TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2453 SUBJECT: GRB 031111B (= H2925) : Kyoto Optical Observation DATE: 03/11/20 15:45:13 GMT FROM: Hitoshi Yamaoka at Kyushu U., VSNET-GRB collab. M. Uemura, R. Ishioka, T. Kato (Kyoto U.) and N. Nakashima, C. Nakayama and H. Yamaoka (Kyushu U.) report on behalf of VSNET-GRB collaboration: "We observed the position of GRB 031111B (= H2925) starting at Nov. 12.45 UT (15 hours after burst) with the 0.25-m telescope (+unfiltered CCD) at Kyoto University. The stacked image (109 x 30s) covers the central part (about 14%) of the entire error circle (diameter 30'). Our field of view can be seen at: http://www.rc.kyushu-u.ac.jp/~yamaoka/GRB031111B/FOV.gif . Visual comparison of the stacked image to the DSS 2 red image shows no new object down to a limiting magnitude of about 17.2 (estimated with USNO-A2.0 red magnitudes of many field stars). This message can be cited."