{
  "bibcode": "2014GCN.16793....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 140907A (Krimm et al., GCNC 16788)\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 2014-09-07 16:21:50 UT (~15 min after the burst).\nWe detected the previously reported afterglow (Xu et al., GCNC 16789;\nKuin and Krimm, GCNC 16791) in all the three bands.\n\nPhotometric results of the OT are listed below.\nWe used GSC 2.3 catalog for flux calibration.\n\n#T0+[day]  MID-UT    T-EXP[sec]   g'  g'_err  Rc  Rc_err  Ic  Ic_err\n-----------------------------------------------------------------------\n0.01381    16:27:01     540.0     18.2 0.2    17.2 0.1    16.6 0.1\n------------------------------------------------------------------------\nT0+ : Elapsed time after the burst [day]\nT-EXP: Total Exposure time [sec]",
  "circularId": 16793,
  "createdOn": 1410137239000,
  "email": "dikuroda@oao.nao.ac.jp",
  "subject": "GRB140907A: MITSuME Okayama Optical Observation",
  "submitter": "Daisuke Kuroda at OAO/NAOJ  <dikuroda@oao.nao.ac.jp>",
  "eventId": "GRB 140907A"
}