{
  "bibcode": "2013GCN.14187....1V",
  "body": "A. Volnova (SAI MSU/IKI), I. Korobtsev (ISTP), E. Klunko (ISTP),   A. \nPozanenko (IKI) report on behalf of  larger GRB  follow-up collaboration:\n\nWe observed the field of the Swift GRB 130131B (Siegel et al., GCN \n14159) with AZT-33IK telescope of Sayan observatory (Mondy) on Jan. 31 \nbetween (UT) 19:51:32-20:51:58. We took several images in R-filter of 60 \ns exposure. Within enhanced XRT position (Goad et al., GCN 14165) we do \nnot detect any source in a combined image. Photometry is based on nearby \nSDSS DR8 stars.\n\nUT start,    t-t0           filter      Exp.   OT      UL (3 sigma)\n             (mid, days)                (s)\n\n19:51:32     0.04973        R          60x60   n/d     22.5",
  "circularId": 14187,
  "createdOn": 1360250415000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 130131B: optical upper limit in Mondy observatory",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 130131B"
}