TITLE: GCN CIRCULAR NUMBER: 14220 SUBJECT: GRB 130215A: MITSuME Okayama Optical Observation DATE: 13/02/15 21:25:50 GMT FROM: Daisuke Kuroda at OAO/NAOJ D. Kuroda, K. Yanagisawa, Y. Shimizu, H. Toda (OAO, NAOJ), S. Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto) and N. Kawai(Tokyo Tech) report on behalf of the MITSuME collaboration: We observed the field of GRB 130215A (D'Elia et al., GCN 14204) with the optical three color (g', Rc and Ic) CCD camera attached to the MITSuME 50cm telescope of Okayama Astrophysical Observatory. The observation started on 2013-02-15 10:40:36 UT (~9.2 h after the burst). We detected the previously reported afterglow (Zheng et al., GCNC 14205) in Rc and Ic bands. Photometric results and three sigma upper limits of the OT are listed below. We used GSC2.3 catalog for flux calibration. #T0+[day] MID-UT T-EXP[sec] g' Rc Rc_err Ic Ic_err ----------------------------------------------------------------------- 0.39422 10:59:09 4080.0 >20.3 19.5 0.2 18.4 0.2 ------------------------------------------------------------------------ T0+ : Elapsed time after the burst [day] T-EXP: Total Exposure time [sec]