TITLE: GCN CIRCULAR NUMBER: 12443 SUBJECT: GRB 111016A: MITSuME Akeno Optical upper limits DATE: 11/10/17 13:14:11 GMT FROM: Yoichi Yatsu at Tokyo Tech. R. Usui, K. Tokoyoda, Y. Aoki, Y. Yatsu, M. Hayashi, K. Kawakami, S. Song, Y. Saito and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration: We observed GRB 111016A (Mangano et al., GCNC 12439) with an optical three color (g, Rc, and Ic) CCD camera attached to the MITSuME 50 cm telescope of Akeno Observatory, Yamanashi, Japan. The follow-up observation was started at 18:52:46, ~15 min after the BAT trigger. We did not find any new point source within the enhanced XRT error circle (Evans et al., GCNC 12441) in all the three bands. Photometric results are listed below. We used GSC2.3 catalog for flux calibration. T0+[sec] MID-UT T-EXP[sec] g' Rc Ic --------------------------------------------------------------------------------- +942 19:38:33 1380 >17.4 >17.3 >16.5 --------------------------------------------------------------------------------- T0+ : Elapsed time after the burst [sec] T-EXP: Total Exposure time [sec]