{
  "bibcode": "2016GCN.20011....1M",
  "body": "E. Mazaeva (IKI), I. Reva (Fesenkov Astrophysical Institute), A. Kusakin \n(Fesenkov Astrophysical Institute),  A. Volnova (IKI), A. Pozanenko \n(IKI) report on behalf of larger GRB follow-up collaboration:\n\nWe present a refined analysis of our observations (Mazaeva et al., GCN \n19980) of  the field of GRB 161004A  (Evans  et al., GCN 19979)  with \nZeiss-1000 (East) 1-m telescope of Tien Shan Astronomical Observatory. \nWe obtained several images in R filter starting on Oct. 04 (UT) \n13:36:52.  In a combined image of the first 30 minutes of our \nobservations we detect the afterglow (Breeveld et al., GCN 19984). \nPreliminary photometry of a combined image is following\n\nDate       UT start   t-T0   Filter   Exp.  OT     Err.  UL\n                       (mid, days)     (s)\n2016-10-04 13:36:52 0.03632  R       9*180  21.65  0.25  21.7\n\nPhotometry is based on nearby SDSS-DR9 stars used in GCN 19980.",
  "circularId": 20011,
  "createdOn": 1475884717000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 161004A: refined analysis of TSHAO optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 161004A"
}