{
  "bibcode": "2012GCN.13897....1K",
  "body": "D. Kuroda (OAO, NAOJ),  H. Hanayama, T. Miyaji, J. Watanabe (IAO, NAOJ),\nK. Yanagisawa (OAO, NAOJ), S.Nagayama (NAOJ), M. Yoshida (Hiroshima),\nK. Ohta (Kyoto) and N. Kawai(Tokyo Tech)\nreport on behalf of the MITSuME collaboration:\n\nWe observed the field of GRB 121024A (Pagani et al., GCNC 13886)\nwith the optical three color (g', Rc and Ic) CCD camera attached\nto the Murikabushi 1m telescope of Ishigakijima Astronomical Observatory.\n\nThe observation started on 2012-10-24 14:30:52 UT (~11.6 h after the burst)\nWe did not find any new point source within the enhanced XRT circle\n(Osborne et al., GCNC 13894) in all the three bands.\nWe also could not detect the previously reported afterglow\n(Klotz et al., GCNC 13887).\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------------------------------------------------------\n0.52401    15:30:47    6060.0   >21.7  >21.4  >20.6\n------------------------------------------------------\nT0+ : Elapsed time after the burst [day]\nT-EXP: Total Exposure time [sec]",
  "circularId": 13897,
  "createdOn": 1351167618000,
  "email": "dikuroda@oao.nao.ac.jp",
  "subject": "GRB 121024A: MITSuME Ishigakijima upper limits",
  "submitter": "Daisuke Kuroda at OAO/NAOJ  <dikuroda@oao.nao.ac.jp>",
  "eventId": "GRB 121024A"
}