{
  "bibcode": "2005GCN..3635....1R",
  "body": "V.Rumyantsev,  E.Sergeeva (CrAO), D.Sharapov, M.Ibrahimov (MAO), G.\nKornienko (UAPhO), A.Pozanenko (IKI) on behalf of larger  GRB follow up\ncollaboration report:\n\nWe have observed the error box  of the Swift GRB050712 (D. Grupe et al., GCN\n3573)  with 0.4m telescope of  Ussuriysk Astrophysical Observatory (UAPhO),\n1.5m telescope of Maidanak observatory (MAO), and 0.7m AZT-8 telescope of\nCrAO on July, 12-13.  We do not detect OT found by  T. Poole et al. (GCN\n3596)  and E. Maiorano et al. (GCN 3601). Upper limits of   stacked images\ncalibrated against  of R USNO-A2.0 are following:\n\nStart time,   Exposure, Filter, Limiting mag.\n\n\n\n(UT)             (s)\n\n\n\nJuly,12 15:06    4x60    none   15.0\n\nJuly,12 23:09    3x180   R      19.0\n\nJuly,13 00:36   11x60    R      19.5\n\n\n\nDetailed analysis of the observed images is underway.\n\n\nThe message may be cited.",
  "circularId": 3635,
  "createdOn": 1121617723000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB050712: optical limits",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 050712"
}