{
  "bibcode": "2016GCN.20215....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 observed the field of 161129A  (Kocevski et al., GCN 20210)  with \nZeiss-1000 (East) 1-m telescope of Tien Shan Astronomical Observatory. \nWe obtained several images in R filter starting on 2016-11-29 (UT) \n12:51:12.  Within enhanced XRT position (Beardmore et al. GCN 20211)  we \ndetected  optical source which is absent in USNO-B1.0 but barely visible \nin DSS2 (red). At the moment we can not say anything about the source \nvariability. The source might be a superposition of the afterglow and a \nhost galaxy.  Preliminary photometry of the source  is following\n\nDate       UT start   t-T0   Filter  Exp.   OT     Err.  UL\n                       (mid, days)    (s)\n\n2016-11-29 12:51:12 0.25949  R       13*300 20.60  0.06  22.4\n\nPhotometry is based on nearby USNO-B1.0 stars\nUSNO-B1.0_id    R2\n1221-0612083 17.30\n1221-0612140 19.02",
  "circularId": 20215,
  "createdOn": 1480437661000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 161129A: TSHAO optical observations / possible afterglow+host galaxy",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 161129A"
}