{
  "bibcode": "2010GCN.11201....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 are continuing observations of the Swift GRB 100901A (Immler  et al., GCN\n11159) with the Z-600 telescope of Mt.Terskol observatory in R-filter. In\ncombined images we still detect  afterglow (Immler et al., GCN 11159). The\nphotometry is based  on several  reference stars of SDSS DR7 and Lupton\ntransformation griz -> R used in our previous reports (GCNs 11191, 11200):\n\nT0+     Filter, Exposure,   OT\n(d)                 (s)\n\n2.4073  R     15x120        20.13  +/-0.12\n2.4282  R     15x120        20.28  +/-0.16",
  "circularId": 11201,
  "createdOn": 1283562938000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 100901A: optical observation at Mt.Terskol",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 100901A"
}