{
  "bibcode": "2009GCN..9826....1R",
  "body": "V. Rumyantsev (CrAO), A. Pozanenko (IKI), M. Andreev (Terskol Branch of \nInstitute of Astronomy)  report on behalf of  larger GRB  follow-up \ncollaboration:\n\nWe observed a field of the INTEGRAL GRB 090817 (Beckmann et al., GCN 9815) \nwith Shajn telescope of  CrAO starting on Aug. 17 (UT) 01:07, i.e. ~17 \nminutes after burst onset. A series of 37 images of 60 s exposure was \nobtained in R filter. Within XRT error circle of  the afterglow (Evans et \nal., GCN 9819, GCN 9825) we do not detect any new object. The quoted \nUSNO-B1.0 star USNO-B1.0 1341-0096763 (Evans et al., GCN 9819) does not \nchange its brightness within ~0.08 m during our observations. An upper limit \nof a single frame of 60 s exposure is R~21.5 m. Data reduction is \ncontinuing.",
  "circularId": 9826,
  "createdOn": 1250596956000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 090817: optical upper limit",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 090817"
}