TITLE: GCN CIRCULAR NUMBER: 19319 SUBJECT: GRB 160417A: MITSuME Okayama upper limits DATE: 16/04/17 14:44:24 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 MITSuME and OISTER collaboration: We observed the field of GRB 160417A (D'Avanzo et al., GCNC 19316) 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 2016-04-17 11:06:00 UT (~6.7 h after the burst). We could not detect the previously reported afterglow (D'Avanzo et al., GCNC 19316; Zheng et al., GCNC 19317) in all the three bands. Three sigma upper limits of the OT are listed below. We used SDSS-DR8 catalog for flux calibration. #T0+[day] MID-UT T-EXP[sec] g' Rc Ic ----------------------------------------------------- 0.32136 12:06:26 5640.0 >19.7 >19.7 >18.9 ----------------------------------------------------- T0+ : Elapsed time after the burst [day] T-EXP: Total Exposure time [sec]