{
  "bibcode": "2012GCN.14108....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 121226A (Krimm et al., GCNC 14105)\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 2012-12-26 19:11:59 UT (~2.3 min after the burst).\nWe did not find any new point source within the XRT circle\n(Krimm et al., GCNC 14105) in all the three bands.\n\nThree sigma upper limits of the OT are listed below. We used\nGSC2.3 catalog for flux calibration.\n\nT0+[day]   MID-UT   T-EXP[sec]    g'     Rc     Ic\n------------------------------------------------------\n0.04333    20:12:06    6360.0   >20.2  >20.2  >19.5\n------------------------------------------------------\nT0+ : Elapsed time after the burst [day]\nT-EXP: Total Exposure time [sec]",
  "circularId": 14108,
  "createdOn": 1356566105000,
  "email": "dikuroda@oao.nao.ac.jp",
  "subject": "GRB 121226A: MITSuME Okayama Optical upper limits",
  "submitter": "Daisuke Kuroda at OAO/NAOJ  <dikuroda@oao.nao.ac.jp>",
  "eventId": "GRB 121226A"
}