{
  "bibcode": "2012GCN.13236....1V",
  "body": "A.Volnova (SAI MSU),  E. Klunko (ISTP), A. Pozanenko (IKI) on  behalf of \nlarger GRB follow up collaboration report:\n\nWe observed the field of the Swift GRB 120404A  (Stratta et al., GCN 13208) \nwith AZT-33IK telescope of Sayan observatory (Mondy). We took several images \nin R-filter of  60 s exposure on Apr. 04, starting (UT) 14:31:21. We clearly \ndetected optical afterglow (Stratta et al., GCN 13208; Guidorzi et al., GCN \n13209) in single images. A preliminary photometry of combined images is \nbased on nearby USNO-B1.0 stars:\n\nt_start,    t-t0 (mid),  filter exp., OT,    err\n(UT)             d               s\n 14:31:21     0.07142 R 5x60   18.24  0.05\n 14:37:26     0.07564 R 5x60   18.36  0.04\n 14:42:30     0.07916 R 5x60   18.40  0.05\n 14:47:34     0.08268 R 5x60   18.36  0.07\n 14:52:37     0.08619 R 5x60   18.59  0.07\n 14:58:42     0.09041 R 5x60   18.59  0.04\n 15:03:46     0.09393 R 5x60   18.77  0.12\n 15:08:50     0.09920 R 10x60 18.76  0.06\n 15:19:58     0.10694 R 10x60 18.95  0.06\n 15:30:06     0.11432 R 10x60 18.94  0.08\n 15:41:14     0.12171 R 10x60 19.00  0.08\n 15:51:21     0.12908 R 10x60 19.30  0.09\n\nOur photometry suggests bumpy light curve of the afterglow during our \nobservations.",
  "circularId": 13236,
  "createdOn": 1333897118000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 120404A: optical observations in Mondy observatory",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 120404A"
}