{
  "bibcode": "2014GCN.15792....1V",
  "body": "A. Volnova (IKI), A. Stepura (UAFO, ISON), A. Matkin (UAFO, ISON),  I. \nMolotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB \nfollow-up collaboration:\n\nWe observed the afterglow (Oksanen et al., GCN 15786; Oate et al., GCN \n15787) of the Swift and INTEGRAL GRB 140206A (Lien et al., GCN 15784; \nGotz et al., GCN 15785) with VT-50 (0.5m) telescope of \nUAFO/ISON-Ussuriysk observatory starting on Feb. 6 (UT) 09:20:05, i.e. \n~2 hours after burst trigger. We took unfiltered images of 30s \nexposures.  In  stacked frames we clearly detect afterglow. A \npreliminary photometry of the afterglow is following:\n\nT_start               T0+       Filter, Exposure,   OT,     OT_err\n(UT)                  (mid, d)            (s)\n\n2014-02-06T09:20:39   0.08783   none     9*30       17.76   0.24\n2014-02-06T10:52:26   0.15309   none    19*30       18.06   0.08\n\nThe photometry is based on reference stars SDSS-DR9, (R mag,\ntransformation by Lupton 2005)\n\nN   SDSS_id                       R(Lupton)errR\n1   J094123.75+664429.9    15.441+/-0.013\n2   J094126.54+664410.8    13.837+/-0.014\n3   J094131.29+664857.0    13.972+/-0.011\n\nObservations continuing.\nThe finding chart can be found in \nhttp://grb.rssi.ru/GRB140206A/grb140206A_VT50_fc.png",
  "circularId": 15792,
  "createdOn": 1391702086000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 140206A: ISON-Ussuriysk optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 140206A"
}