{
  "bibcode": "2016GCN.19574....1M",
  "body": "E. Mazaeva (IKI), A. Kusakin (Fesenkov Astrophysical Institute), I. Reva \n(Fesenkov Astrophysical Institute), A. Volnova (IKI), A. Pozanenko (IKI) \nreport on behalf of larger GRB follow-up collaboration:\n\nWe observed GRB 160623A  (Vianello et al., GCN 19553; Mailyan et al., \nGCN 19555; Frederiks  et al., GCN 19554) with Zeiss-1000 (East) 1-m \ntelescopes of Tien Shan Astronomical Observatory. We obtained several \nimages in R filter starting on June 24 (UT) 19:19:17. We detect optical \ntransient associated with GRB 160623A (Pozanenko et al., GCN 19561; \nButler  et al., GCN 19567).   Preliminary photometry of combined image \nis following\n\nDate       UT start   t-T0    Filter  Exp.   OT     Err.  UL\n                       (mid, days)     (s)\n\n2016-06-24 19:19:17   1.62157 R       40*90 20.57   0.10  22.0\n\nPhotometry is based on nearby USNO-B1.0 star\n\nUSNO-B.1_id     R2\n1322-0479881    15.12\n1322-0479687    15.57\n1322-0479855    15.22\n1322-0479927    17.43\n1322-0479987    17.39",
  "circularId": 19574,
  "createdOn": 1466849267000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 160623A: TSHAO optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 160623A"
}