{
  "bibcode": "2013GCN.15033....1K",
  "body": "D. Kuroda (OAO, NAOJ),  H. Hanayama, T. Miyaji, J. Watanabe (IAO, NAOJ),\nK. Yanagisawa (OAO, NAOJ), S.Nagayama (NAOJ), M. Yoshida (Hiroshima),\nK. Ohta (Kyoto) and N. Kawai(Tokyo Tech)\nreport on behalf of the MITSuME collaboration:\n\nWe observed the field of GRB 130725A (Zhang et al., GCNC 15028)\nwith the optical three color (g', Rc and Ic) CCD camera attached\nto the Murikabushi 1m telescope of Ishigakijima Astronomical\nObservatory.\n\nThe observation started on 2013-07-25 13:34:52 UT (~2.0 h after the\nburst). We detected the afterglow candidate within the XRT error circle\n(Zhang et al., GCNC 15028) in only Rc band.\n\nPhotometric result and three sigma upper limits of the OT are listed below.\nWe used SDSS catalog for flux calibration.\n\n#T0+[day]  MID-UT    T-EXP[sec]   g'     Rc  Rc_err  Ic\n----------------------------------------------------------------------\n0.10534    14:08:53   2280.0    >21.3   20.8 0.2   >19.8\n----------------------------------------------------------------------\nT0+ : Elapsed time after the burst [day]\nT-EXP: Total Exposure time [sec]",
  "circularId": 15033,
  "createdOn": 1374800642000,
  "email": "dikuroda@oao.nao.ac.jp",
  "subject": "GRB 130725A: MITSuME Ishigakijima Optical Observation",
  "submitter": "Daisuke Kuroda at OAO/NAOJ  <dikuroda@oao.nao.ac.jp>",
  "eventId": "GRB 130725A"
}