{
  "bibcode": "2013GCN.15389....1K",
  "body": "D. Kuroda, (OAO, NAOJ), H. Hanayama (IAO, NAOJ), K. Yanagisawa,\nY. Shimizu, H. Toda (OAO, NAOJ), T. Miyaji J. Watanabe, (IAO, NAOJ),\nS.Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto)\nand N. Kawai(Tokyo Tech) report on behalf of the MITSuME collaboration:\n\nWe observed the field of GRB 1301026A (Swift Trigger 575905) (Cenko et al., GCNC\n15384) with the optical three color (g', Rc and Ic) CCD camera attached to the\nMITSuME 50cm telescope of Okayama Astrophysical Observatory and the Murikabushi\n1m telescope of Ishigakijima Astronomical Observatory.\n\nWe did not find any new point source within the BAT error circle (Cenko et al.,\nGCNC 15384) in all the three bands.\n\nThree sigma upper limits of the OT are listed below. We used GSC2.3 catalog for\nflux calibration.\n\nOkayama Astrophysical Observatory:\nThe observation started on 2013-10-26 10:01:09 UT (~3.4 h after the burst).\nT0+[day]   MID-UT   T-EXP[sec]    g'     Rc     Ic\n------------------------------------------------------\n0.24326    12:29:49    6300.0    >19.7  >19.6  >18.6\n------------------------------------------------------\nT0+ : Elapsed time after the burst [day]\nT-EXP: Total Exposure time [sec]\n\n\nIshigakijima Astronomical Observatory:\nThe observation started on 2013-10-26 13:13:44 UT (~6.6 h after the burst).\nT0+[day]   MID-UT   T-EXP[sec]    g'     Rc     Ic\n------------------------------------------------------\n0.30110    13:53:07    3360.0    >21.6  >21.0  >20.4\n------------------------------------------------------\nT0+ : Elapsed time after the burst [day]\nT-EXP: Total Exposure time [sec]",
  "circularId": 15389,
  "createdOn": 1382872064000,
  "email": "dikuroda@oao.nao.ac.jp",
  "subject": "Swift Trigger 575905/ GRB 131026A: MITSuME Okayama and Ishigakijima Optical upper limits",
  "submitter": "Daisuke Kuroda at OAO/NAOJ  <dikuroda@oao.nao.ac.jp>",
  "eventId": "GRB 131026A"
}