{
  "bibcode": "2014GCN.16160....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 and OISTER collaboration:\n\nWe observed the field of GRB 140423A (Sonbas et al., GCNC 16142)\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 2014-04-23 10:43:36 UT (~2.2 h after the burst).\nWe detected the previously reported afterglow (Elenin et al., GCNC 16143;\nKaur et al., GCNC 16144; Ferrante et al., GCNC 16145) in all the three bands.\n\nPhotometric results of the OT are listed below.\nWe used SDSS catalog for flux calibration.\n\n#T0+[day]  MID-UT    T-EXP[sec]   g'  g'_err  Rc  Rc_err   Ic  Ic_err\n-----------------------------------------------------------------------\n0.21728    13:44:45    5880.0     20.1 0.3    20.1 0.2     19.5 0.3\n------------------------------------------------------------------------\nT0+ : Elapsed time after the burst [day]\nT-EXP: Total Exposure time [sec]",
  "circularId": 16160,
  "createdOn": 1398313815000,
  "email": "dikuroda@oao.nao.ac.jp",
  "subject": "GRB 140423A: MITSuME Okayama Optical Observation",
  "submitter": "Daisuke Kuroda at OAO/NAOJ  <dikuroda@oao.nao.ac.jp>",
  "eventId": "GRB 140423A"
}