{
  "bibcode": "2016GCN.18991....1V",
  "body": "A. Volnova (IKI), E. Mazaeva (IKI), E. Klunko (ISTP),  I. Korobtsev \n(ISTP), A. Pozanenko (IKI) report on behalf of larger GRB follow-up \ncollaboration:\n\nWe observed the Swift GRB 160131A (Page et al., GCN 18951) with AZT-33IK \ntelescope of Sayan observatory (Mondy)  starting on Feb.04 (UT) \n11:42:43. We detect optical afterglow (Page et al., GCN 18951; Yurkov et \nal., GCN 18952; Guidorzi et al., GCN 18953; Xin et al., GCN 18954; Xin \net al., GCN 18955; Watson et al., GCN 18956) in a combined image. \nPreliminary photometry is following\n\n\nDate        UT start   t-T0    Filter   Exp.   OT     Err.\n                       (mid, days)       (s)\n\n\n2016-02-04  11:42:43  4.16058  R       29*120  21.70  0.23\n\nUSNO-B.1_id     R2\n\n0829-0078147    14.56\n0829-0078222    18.96\n0829-0078226    18.69\n0829-0078129    17.62",
  "circularId": 18991,
  "createdOn": 1454685324000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 160131A: Mondy optcial observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 160131A"
}