{
  "bibcode": "2012GCN.13693....1L",
  "body": "E. Litvinenko (UBAI), A. Volnova (SAI MSU), I. Molotov (KIAM), A. Pozanenko \n(IKI) report on behalf of  larger GRB  follow-up collaboration:\n\nWe observed the field of  GRB 120811C (Barlow et al., GCN  13622) with \n0.4-m telescope of ISON-Kitab observatory  starting on  Aug. 11 (UT) \n15:53:49.  We took  several unfiltered images of 30 s exposures.  The \noptical afterglow  (Denisenko et al., GCN 13623) is clearly detected in \nsingle initial frames.  A photometry of some co-added frames is based  on \nthe SDSS stars\n\nSDSS id                             RA                 Dec \nR\nJ131912.45+621444.3 13 19 12,453  +62 14 44,35   16.63\nJ131815,89+621830,6 13 18 15,896  +62 18 30,67   16.64\n\nis following:\n\nT_start,     T0+,           Exposure,  OT,\n(UT)           mid, d         (s)\n\n15:53:49    0.01392    4x30          17,90 +/-0.13\n15:56:05    0.01569    5x30          17.95 +/-0.13\n15:58:55    0.01841  10x30          18.20 +/-0.10\n16:04:35    0.02356  15x30          18.45 +/-0.11\n16:13:06    0.03145  25x30          18.40 +/-0.07",
  "circularId": 13693,
  "createdOn": 1345475674000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 120811C: optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 120811C"
}