{
  "bibcode": "2011GCN.12743....1K",
  "body": "D. Kuroda, K. Yanagisawa, Y. Shimizu, H. Toda (OAO, NAOJ),\nS. Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto)\nand N. Kawai(Tokyo Tech)\nreport on behalf of the MITSuME collaboration:\n\nWe observed the field of GRB 111225A (Ukwatta et al., GCNC 12737)\nwith the optical three color (g', Rc and Ic) CCD camera attached\nto the MITSuME 50cm telescope of Okayama Astrophysical Observatory.\n\nThe observation started on 2011-12-28 15:47:03 UT (~2.3 min after\nthe burst). We detected the previously reported afterglow\n(Ukwatta, GCNC 12737; Xin et al., GCNC 12738) in all the three bands.\n\n\nPhotometric results and are listed below. We used SDSS catalog for\nflux calibration.\n\n#T0+[day]  MID-UT    T-EXP[sec]   g'  g'_err   Rc  Rc_err   Ic  Ic_err\n----------------------------------------------------------------------\n0.00511    15:52:04     540.0   17.45  0.06  17.13  0.05   16.52  0.05\n----------------------------------------------------------------------\nT0+ : Elapsed time after the burst [day]\nT-EXP: Total Exposure time [sec]",
  "circularId": 12743,
  "createdOn": 1325109056000,
  "email": "dikuroda@oao.nao.ac.jp",
  "subject": "GRB111228A: MITSuME Okayama Optical Observation",
  "submitter": "Daisuke Kuroda at OAO/NAOJ  <dikuroda@oao.nao.ac.jp>",
  "eventId": "GRB 111228A"
}