{
  "bibcode": "2016GCN.19619....1M",
  "body": "E. Mazaeva (IKI), A. Kusakin (Fesenkov Astrophysical Institute), P. \nMinaev (IKI), I. Reva (Fesenkov Astrophysical Institute), A. Volnova \n(IKI), A. Pozanenko (IKI) report on behalf of larger GRB follow-up \ncollaboration:\n\nWe observed the field of GRB 160625B (Dirirsa et al., GCN 19580; Burns \net al. GCN 19581) with Zeiss-1000 (East) 1-m telescopes of Tien Shan \nAstronomical Observatory. We obtained several images in R filter \nstarting on June 27 (UT) 20:15:57. We detect optical afterglow of  GRB \n160625B (Troja et al., GCN 19588; Oates  et al., GCN  19589). \nPreliminary photometry of a combined image is following\n\nDate       UT start   t-T0    Filter  Exp.   OT     Err.  UL\n                       (mid, days)     (s)\n\n2016-06-27 20:15:57   1.92994 R       54*60 19.56  0.06  22.0\n\nPhotometry is based on nearby USNO-B1.0 stars reported in GCN 19605 \n(Mazaeva et. al).",
  "circularId": 19619,
  "createdOn": 1467213518000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 160625B: TSHAO optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 160625B"
}