{
  "bibcode": "2011GCN.12493....1B",
  "body": "M. Blazek (AsU AV), R. Hudec (AsU AV), M. Jelinek (IAA-CSIC),\nC. Polasek (AsU AV) and J. Strobl (AsU AV)\n\n\n\"We observed the field of GRB 111022B (Holland et al., GCN\n12472) with 0.5m robotic telescope D50 in Ondrejov observatory\n(Czech Republic). The observation started at 23:55:06 UT on\nOctober 22, 2011, approx. 6.5 hours after the Swift trigger.\n\nWe report no detection of the optical counterpart on the\nunfiltered images within the error circle given by SWIFT-XRT\n(Beardmore et al., GCN 12478). The limiting magnitude of about\nR>20.0 mag in R-band was estimated using nearby sources from\nGSC2.2 catalogue.\"",
  "circularId": 12493,
  "createdOn": 1319511515000,
  "email": "mates@iaa.es",
  "subject": "GRB111022B: D50 optical limit",
  "submitter": "Martin Jelinek at Inst.Astrophys.Andalucia,Granada  <mates@iaa.es>",
  "eventId": "GRB 111022B"
}