{
  "bibcode": "2014GCN.17054....1O",
  "body": "Y.Ono, T. Yoshii, Y. Saito, Y. Tachibana, H. Ohuchi, Y. Yano,\nS. Kurita, T. Fujiwara, Y. Yatsu, and N. Kawai (Tokyo Tech)\nreport on behalf of the MITSuME collaboration:\n\nWe observed the field of GRB 141109B (A.Melandri et al., GCN Circular #17038) with the \noptical three color (g', Rc, and Ic) CCD cameras attached to the MITSuME 50 cm telescope of Akeno Observatory, Yamanashi, Japan.\n\nThe observation started on 2014-11-09 18:57:42.8 UT (~11.2h after the burst).\nWe did not find any new point source within XRT circle in all three bands.\n\nThe measured magnitudes are listed below.\n\nT0+[sec]      MID-UT      T-EXP[sec]         g'           Rc           Ic\n---------------------------------------------------------------------------------------\n  40320     19:52:29.1          780           >19.4      >19.0     > 18.4\n---------------------------------------------------------------------------------------\nT0+ : Elapsed time after the burst \nT-EXP: Total Exposure time \nWe used GSC2.3 catalog for flux calibration.",
  "circularId": 17054,
  "createdOn": 1415630804000,
  "email": "yoshii.t.ac@m.titech.ac.jp",
  "subject": "GRB 141109B: MITSuME Akeno upper limits",
  "submitter": "Taketoshi Yoshii at Tokyo Tech  <yoshii.t.ac@m.titech.ac.jp>",
  "eventId": "GRB 141109B"
}