{
  "bibcode": "2016GCN.19003....1O",
  "body": "Y.Ono, T.Fujiwara, T. Yoshii, Y. Saito, Y. Tachibana, H. Ohuchi, Y. Yano, S. Kurita, S.Harita, Y.Muraki, Y. Yatsu, and N. Kawai (Tokyo Tech)\n\nreport on behalf of the MITSuME collaboration:\n\nWe searched for the optical counterpart of GRB 160203A (P. D'Avanzo et al., GCN Circular #18979) with the \noptical three color (g', Rc, and Ic) CCD cameras attached to the MITSuME 50 cm\ntelescope of Akeno Observatory, Yamanashi, Japan.\n\nThe observation started on 2016-02-03 15:46:41 UT (~13.5 h after the burst).\nWe did not find any new point source within XRT circle in all three bands.\n\nWe obtained following limits for the magnitudes.\n\nT0+[hour]    MID-UT     T-EXP[sec]      g'         Rc          Ic\n----------------------------------------------------------------------------\n   15.98        18:12:04         10080       >21.0     >20.8    >20.1\n----------------------------------------------------------------------------\nT0+ : Elapsed time after the burst \nT-EXP: Total Exposure time \nWe used GSC2.3 catalog for flux calibration.",
  "circularId": 19003,
  "createdOn": 1454921698000,
  "email": "yoshii.t.ac@m.titech.ac.jp",
  "subject": "GRB 160203A: MITSuME Akeno optical upper limits",
  "submitter": "Taketoshi Yoshii at Tokyo Tech  <yoshii.t.ac@m.titech.ac.jp>",
  "eventId": "GRB 160203A"
}