{
  "bibcode": "2014GCN.16779....1P",
  "body": "A. Pozanenko (IKI), A. Volnova (IKI), N. Polyakov (ISON), E. Romas (ISON), I. Molotov (KIAM), report on  behalf of larger collaboration:\n\nWe observed the field of  GRB 140903A (Cummings et al., GCN 16763) with Santel-400AN   telescope of ISON-Kislovodsk observatory starting on Sep. 03 (UT) 18:54:36. In the enhanced XRT position (De Pasquale et al., GCN 16767) we do not detect the object (Capone  et al., GCN 16769; Cenko  et al., GCN 16770;  Fruchter, GCN 16776). A preliminary upper limit after subtraction of the nearby bright star is 16m. A formal upper limit of a point-like source in the image away of the bright nearby star is following\n\nDate       UT start   t-T0    Filter   Exp.   UL(3 sigma) \n                     (mid, days)        (s)\n\n2014-09-03 18:22:05  0.14057  None     100    18.6       \n\nThe photometry is based on SDSS stars\n\nSDSS J155213.13+273321.7 R_Lupton 15.392 ± 0.013\nSDSS J155218.31+273433.5 R_Lupton 14.792 ± 0.013\nSDSS J155155,39+273948,9 R_Lupton 15.421 ± 0.013",
  "circularId": 16779,
  "createdOn": 1409890278000,
  "email": "alex@grb.rssi.ru",
  "subject": "GRB 140903A:  ISON-Kislovodsk observations",
  "submitter": "Alexei Pozanenko at IKI  <alex@grb.rssi.ru>",
  "eventId": "GRB 140903A"
}