{
  "bibcode": "2018GCN.22736....1H",
  "body": "T. Horiuchi,  H. Hanayama, M. Honma (IAO, NAOJ),\nR. Itoh, K. L. Murata, Y. Tachibana, S. Harita, K. Morita, T. Ozawa, H. Mamiya,\nK. Shiraishi, Y. Yatsu, and N. Kawai (Tokyo Tech)\nreport on behalf of the MITSuME collaboration:\n\nWe searched for the optical counterpart of GRB 180514A\n(LaPorte et al., GCN Circular #22723, Volnova et al., GCN Circular #22735)\nwith the optical three color (g', Rc, and Ic) CCD cameras attached to\nthe Murikabushi 1m telescope of Ishigakijima Astronomical Observatory.\n\n\nThe observation started on 2018-05-14 13:46:55 UT.\nWe did not find any point source at the position of the XRT error\ncircle in all three bands. We obtained following limits for the magnitudes.\n\nT0+[min]    MID-UT      T-EXP[sec]    g'       Rc        Ic\n-------------------------------------------------------------------------------------------------------\n~21.4      14:18:37  3,300   >19.6   >19.2   >17.2\n-------------------------------------------------------------------------------------------------------\n\nT0+ : Elapsed time after the burst\nT-EXP: Total Exposure time\nWe used UCAC-4 catalog for flux calibration.",
  "circularId": 22736,
  "createdOn": 1526519475000,
  "email": "itoh@hp.phys.titech.ac.jp",
  "subject": "GRB 180514A: MITSuME Ishigakijima optical upper limits",
  "submitter": "Ryosuke Itoh at Tokyo Institute of Tech.  <itoh@hp.phys.titech.ac.jp>",
  "eventId": "GRB 180514A"
}