{
  "bibcode": "2011GCN.11905....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 110407A (Wolf et al., GCN 11894)\nwith the optical three color (g', Rc and Ic) CCD camera attached\nto the MITSuME 50cm telescope of Okayama Astrophysical Observatory\nand the Murikabushi 1m telescope of Ishigakijima Astronomical\nObservatory.\n\nWe did not find any new point source within the enhanced XRT error\ncircle (Evans et al., GCNC 11903) in all the three bands. We\ncould not detect the previously reported afterglow\n(Chuang et al., GCN 11899).\n\nThree sigma upper limits of the OT are listed below. We used\nSDSS catalog for flux calibration.\n\nOkayama Astrophysical Observatory:\nThe observation started on 2011-04-07 14:08:27, (1.8 min\nafter the burst).\n\nT0+[day]   MID-UT   T-EXP[sec]    g'     Rc     Ic\n------------------------------------------------------\n0.00472    14:13:28     540.0    >19.3  >19.1  >18.2\n0.07701    15:57:35    6840.0    >20.3  >20.2  >19.4\n------------------------------------------------------\nT0+ : Elapsed time after the burst [day]\nT-EXP: Total Exposure time [sec]\n\nIshigakijima Astronomical Observatory:\nThe observation started on2011-04-07 15:51:28 UT, (1.7 h\nafter the burst).\n\nT0+[day]   MID-UT   T-EXP[sec]    g'     Rc     Ic\n------------------------------------------------------\n0.12244    17:02:59    1080.0    >20.9  >20.7  >19.7\n------------------------------------------------------\nT0+ : Elapsed time after the burst [day]\nT-EXP: Total Exposure time [sec]",
  "circularId": 11905,
  "createdOn": 1302231355000,
  "email": "dikuroda@oao.nao.ac.jp",
  "subject": "GRB 110407A: MITSuME Okayama and Ishigakijima Optical upper limits",
  "submitter": "Daisuke Kuroda at OAO/NAOJ  <dikuroda@oao.nao.ac.jp>",
  "eventId": "GRB 110407A"
}