{
  "bibcode": "2007GCN..6801....1A",
  "body": "K. Antonyuk, V. Rumyantsev (CrAO), A. Pozanenko (IKI) report on behalf of \nlarger GRB follow-up collaboration:\n\nWe observed the error box of  GRB070917  (Cummings  et al., GCN 6743) with \nAZT-11 telescope of CrAO on Sep. 17.  Series of images were obtained between \n(UT) 2007-09-17 18:58:08 and 19:25:37 in R filter. In a combined image of \n6x300 s within the XRT error circle (Evans et al., GCN 6796) we do not \ndetect any new sources in comparison with DSS2 up to the limiting magnitude \n(3 sigma) R=21.1. Photometry calibration is performed against USNO-A2.0. The \ncombined image can be found in \nhttp://grb.rssi.ru/GRB070917/GRB070917_AZT-11.gif.\n\nThis message may be cited.",
  "circularId": 6801,
  "createdOn": 1190226337000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB070917: optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 070917"
}