{
  "bibcode": "2014GCN.17029....1M",
  "body": "E. Mazaeva (IKI),  A. Volnova (IKI), A. Khruslov (INASAN), A. Kusakin \n(Fesenkov Astrophysical Institute), A. Pozanenko (IKI) report on behalf \nof larger GRB follow-up collaboration:\n\nWe observed the field of the GRB 141031B (Gompertz et al., GCN 16998)\nwith  Zeiss-1000 (East) 1m telescope of Tien Shan Astronomical\nObservatory on Oct., 31  starting on (UT) 15:39:02.  Within enhanced XRT \nerror circle (Goad et al., GCN 17009)  we do not detect any object \neither in a single image (Mazaeva et al., GCN 17007) or   in combined \nimage of a total exposure of 4800 s.\nDetails of the photometry are following:\n\ndate       UT start   t-T0       Filter  Exp.   UL (3 sigma)\n                      (mid, days)          (s)\n\n2014-10-31 15:39:02   0.03284    R         600  21.5\n2014-10-31 15:39:02   0.05837    R       8*600  22.3\n\n\nThe photometry is based on  following SDSS DR9 stars:\n\nSDSS_id             R_Lupton err\nJ234748,81+411954,3 16.430 0.014\nJ234749,26+412154,3 16.866 0.014\nJ234741,02+411920,5 17.452 0.015",
  "circularId": 17029,
  "createdOn": 1415215668000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 141031B: TShAO optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 141031B"
}