{
  "bibcode": "2012GCN.13761....1N",
  "body": "V. Nevski (ISON-Kislovodsk Observatory), A. Volnova (SAI MSU/IKI), I. \nMolotov (KIAM), A. Pozanenko (IKI)  report on behalf of larger \ncollaboration:\n\nWe observed the field of  GRB 120907A (Racusin  et al., GCN 13716) with \nSantel-400AN (0.4-m f/3)  telescope �f ISON-Kislovodsk observatory  starting \non  Sep. 07 (UT) 00:34:32, i.e. ~10.2 minutes after burst  trigger.  We took \nseveral unfiltered images  of 30 s and 60 s exposures.  In a stacked images \nwe clearly detect optical afterglow of   GRB 120907A (Racusin  et al., GCN \n13716; Gorbovskoy et al., GCN 13718; Kruehler et al., GCN 13719). A \npreliminary photometry of  stacked  frames is based  on the USNO-B1.0 (R2) \nnearby  stars:\n\nT_start,     T0+,       Exp,     Filter,       OT\n(UT)          mid (d)   (s)\n\n00:34:32  0.00899 10x30    none      18.55+/-0.09\n00:51:45  0.02120   5x60    none      18.95+/-0.13\n00:58:09  0.02980   8x60    none      19.52+/-0.20\n01:16:32  0.04339   8x60    none      19.50+/-0.20",
  "circularId": 13761,
  "createdOn": 1347562427000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 120907A: optical observations of ISON-Kislovodsk",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 120907A"
}