{
  "bibcode": "2005GCN..4396....1N",
  "body": "D. Nogami, T. Kawamura, J. Kuriyama, K. Sugiyasu, K. Kubota\n(Kyoto Univ.), K. Yanagisawa (Okayama Astrophys. Obs.),\nS. Kouzuma, H. Yamaoka (Kyushu Univ.), and N. Kawai (Tokyo\nInst. of Tech.) report:\n\nWe observed the field of GRB051117B (Band et al., GCN 4281)\nwith a 50-cm telescope (MITSuME) at the Okayama Astrophysical\nObservatory, using a three-color (g', Rc, and Ic) CCD imager.\nThe observations started at 14:16:22 (UT), about 54 min after\nthe trigger time, and ended at 16:36:46 (UT).  The exposure\ntime was 60 sec, and we obtained 110 images in each band.\n\nWe could not find any afterglow candidate around the error\nbox of GRB051117B (GCN 4281).  The 3-sigma upper limits in\nthe stacked images of each band are 19.2 mag, 19.2 mag, and\n19.5 mag in the g', Rc, and Ic band, respectively.  These\nmagnitudes were calibrated with the catalogs of Tycho (VT),\nUSNO A2.0 (R), and USNO B1.0 for g', Rc, and Ic, respectively.",
  "circularId": 4396,
  "createdOn": 1135699366000,
  "email": "nogami@kwasan.kyoto-u.ac.jp",
  "subject": "GRB051117B: optical observation",
  "submitter": "Daisaku Nogami at Kyoto U  <nogami@kwasan.kyoto-u.ac.jp>",
  "eventId": "GRB 051117B"
}