{
  "bibcode": "2013GCN.14255....1P",
  "body": "A. Pozanenko (IKI), A. Volnova (SAI MSU), A. Sergeev (Institute of Radio \nAstronomy of NASU),  O. Burhonov (UBAI), I. Molotov (KIAM) report on \nbehalf of larger GRB follow-up collaboration:\n\nWe observed  the field of Swift  GRB 121128A  (Oates et al., GCN 14007) \nwith AZT-22 telescope of Maidanak observatory starting on Nov. 30  (UT) \n13:47:48 under mean seeing (FWHM) of about 1 arcsec. We obtained several \nimages of 180 s exposure in R  filter.  The optical afterglow\n(Oates et al., GCN 14007; Japelj et al., GCN 14008) is not detected in \nour  images. A photometry of the stacked image is based on nearby \nUSNO-B1.0 stars:\n\nt_start, T0+ (mid), filter, exp.,   OT,  Upper Limit(3sigma)\n(UT)     d                  s\n\n13:47:48 2.37924    R      15x180   n/d  23.7",
  "circularId": 14255,
  "createdOn": 1362427752000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 121128A: optical upper limit in Maidanak observatory",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 121128A"
}