{
  "bibcode": "2007GCN..6062....1I",
  "body": "T. Ishimura, Y. Yatsu, T. Shimokawabe, N. Vasquez, and N. Kawai \n(Tokyo Tech) report on behalf of the MITSuME collaboration:\n\nWe observed the error box of GRB070129 (Godet et al., GCN 6053)\nwith the 3-color 50cm MITSuME Telescope at Akeno, Japan \nstarting at 9:44:12 UT, 10.1 hours after the trigger.    \nIn the co-added images of Ic, Rc, and g' bands, we did not detect\nthe afterglow .  The 3-sigma limiting magnitudes based on USNO-B1.0\n(I-band) and NOMAD (R-band,g'-band) stars are following.\n\nFilter   start time   end time    Exp(s)    Mag (3-sigma upper limit)\n-----------------------------------------------------------------\nIc        9:44:12      10:22:57     60s * 25       18.4 \nRc        9:44:12      10:22:57     60s * 25       19.0 \ng'        9:44:12      10:22:57     60s * 25\t   19.4\n-----------------------------------------------------------------",
  "circularId": 6062,
  "createdOn": 1170225064000,
  "email": "nkawai@hp.phys.titech.ac.jp",
  "subject": "GRB070129: MITSuME optical observation",
  "submitter": "Nobuyuki Kawai at Tokyo Tech  <nkawai@hp.phys.titech.ac.jp>",
  "eventId": "GRB 070129"
}