{
  "bibcode": "2006GCN..4612....1S",
  "body": "D. Sharapov (MAO, and NOT La Palma),  M. Ibrahimov (MAO), A. Pozanenko\n(IKI), V. Rumyantsev (CrAO) on behalf of larger GRB follow up collaboration\nreport:\n\nWe observed  error box of  GRB051221b (Boyd et al., GCN 4376) with 1.5m\ntelescope of Maidanak Astronomical Observatory on Dec. 22 between (UT) 15:41\nand 16:06. A set of 7x180 s images were obtained in R-band. We do not detect\nthe object at the location of the candidate optical counterpart reported by\nHalpern & Tyagi (GCN 4381). Limiting magnitude of the stacked image is based\non USNO-B1.0:\n\nObs. time,           Exposure,  mag.(UL),Seeing\n(UT)                 (s)\n\nDec.22 15:41 - 16:06 1260       22.3     1.2\"\n\nCombined images can be found at\n\nhttp://grb.rssi.ru/GRB051221b/grb051221b_051222_R_AZT22.jpg\n\nThe message may be cited.",
  "circularId": 4612,
  "createdOn": 1138414641000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB050121b: optical observation",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 050121B"
}