{
  "bibcode": "2010GCN.11192....1A",
  "body": "M. Andreev, A. Sergeev (Terskol Branch of Institute of Astronomy) and \nA.Pozanenko (IKI) on behalf of larger GRB follow up collaboration report:\n\nWe observed  the field of the Swift GRB 100902A (Sakamoto  et al, GCN 11181) \nwith the Z-600 telescope of Mt.Terskol observatory in R-filter between (UT) \n00:52:20 - 01:26:40. In enhanced XRT error circle (Beardmore et al, GCN \n11188) we do not detect  any object. The object at distance of 4\" from the \ncenter of the enhanced  XRT error circle (Beardmore et al, GCN 11188) in \ncoordinates (J2000) RA =03 14 31.35 Dec= +30 58 44.8 with uncertainty of 1\" \nis detected at magnitude R ~ 20 and upper limit of stacked image of R=21 (3 \nsigma). At present time we cannot confirm variability of the object.\n\nThe finding chart can be found at\nhttp://grb.rssi.ru/GRB100902A/GRB100902A_R_Z600.jpg",
  "circularId": 11192,
  "createdOn": 1283512836000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 100902A: optical observation at Mt.Terskol",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 100902A"
}