{
  "bibcode": "2011GCN.11873....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 110402A (Ukwatta et al., GCN 11857)\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 (Beardmore et al., GCNC 11860) in all the three bands. We\ncould not detect the previously reported afterglow\n(Mundell et al., GCN 11858).\n\n\nIshigakijima Astronomical Observatory:\nThe observation started on 2011-04-02 12:18:01 UT, (~12.1 h\nafter the burst).\n\nT0+[day]   MID-UT   T-EXP[sec]    g'     Rc     Ic\n------------------------------------------------------\n0.53014    12:56:21    3540.0    >21.4  >21.4  >20.4\n------------------------------------------------------\nT0+ : Elapsed time after the burst [day]\nT-EXP: Total Exposure time [sec]\n\n\nOkayama Astrophysical Observatory:\nThe observation started on 2011-04-02 13:51:58 UT, (13.7 h\nafter the burst).\n\nThree sigma upper limits of the OT are listed below. We used\nSDSS catalog for flux calibration.\n\nT0+[day]   MID-UT   T-EXP[sec]    g'     Rc     Ic\n------------------------------------------------------\n0.56634    13:48:29    8400.0    >19.6  >20.0  >19.4\n------------------------------------------------------\nT0+ : Elapsed time after the burst [day]\nT-EXP: Total Exposure time [sec]",
  "circularId": 11873,
  "createdOn": 1301836387000,
  "email": "dikuroda@oao.nao.ac.jp",
  "subject": "GRB 110402A: MITSuME Okayama and Ishigakijima Optical upper limits",
  "submitter": "Daisuke Kuroda at OAO/NAOJ  <dikuroda@oao.nao.ac.jp>",
  "eventId": "GRB 110402A"
}