{
  "bibcode": "2015GCN.18416....1M",
  "body": "E. Mazaeva (IKI), E. Klunko (ISTP), A. Volnova (IKI), I. Korobtsev \n(ISTP),  A. Pozanenko (IKI) report on behalf of larger GRB follow-up \ncollaboration:\n\nWe observed the field of Swift GRB 151006A (Kocevski et al., GCN 18398) \nwith AZT-33IK telescope of Sayan observatory (Mondy) starting on Oct. 18 \n(UT) 16:50:47. We obtained several images in R-filter of 120 s exposure. \n    Within XRT error circle (Goad et al., GCN 18403)  we do not detect \nany optical source. Upper limit is following\n\nDate       UT start   t-T0     Filter   Exp.    UL (3 sigma)\n                       (mid, days)       (s)\n\n2015-10-06 16:50:47   0.31306  R        35*120  22.4\n\nPhotometry is based on USNO-B1.0 stars:\nUSNO-B1.0_id R2\n1604-0085829 18.23\n1604-0085812 16.90",
  "circularId": 18416,
  "createdOn": 1444557810000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 151006A: Mondy optical upper limit",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 151006A"
}