{
  "bibcode": "2006GCN..5828....1U",
  "body": "M. Uemura, A. Arai, and T. Uehara (Hiroshima Univ.), \nreport on behalf of the KANATA GRB team:\n\n  We started optical imaging of the field of GRB061121 using \nthe TRISPEC attached to the KANATA 1.5-m telescope at Higashi-Hiroshima \nObservatory, Japan.  We detected the optical afterglow reported \nin GCN 5823 and 5824 in our images taken with the exposure time of \n123 s and the Rc filter.  Using the comparison star USNOA2.0 \n0750-0732588 assuming Rc=14.2, our preliminary analysis yielded \nthe following photometric result:\n\nUT            Time after the burst (s)    Rc mag  \nNov. 21.71928         6797                18.539 +/- 0.074                                    \n\nWe keep time-series observations.",
  "circularId": 5828,
  "createdOn": 1164130968000,
  "email": "uemuram@hiroshima-u.ac.jp",
  "subject": "GRB 061121: Optical observation at the KANATA 1.5m telescope",
  "submitter": "Makoto Uemura at Hiroshima U  <uemuram@hiroshima-u.ac.jp>",
  "eventId": "GRB 061121"
}