{
  "bibcode": "2013GCN.14813....1V",
  "body": "A. Volnova (IKI), R.Inasaridze (AAO), O. Kvaratskhelia (AAO), V. \nAyvazian(AAO), Yu. Krugly (IA KhNU),  I. Molotov (KIAM), A. Pozanenko \n(IKI)  report on behalf of  larger GRB follow-up collaboration:\n\nWe observed the field of the Swift Swift GRB 130603A (Melandri et al., \nGCN 14731)with AS-32 (0.7m) telescope of Abastumani Observatory  on Jun. \n03 and Jun. 04. We obtained several unfiltered images of 300 s and 180 s \nexposures. The afterglow (Melandri  et al., GCN 14732) is well detected \nin  combined images in both epochs. Preliminary photometry\n\nDate        T_start    t-t0,      exp,    OT\n             (UT)       mid, d     s\n2013-06-03  22:19:06   0.69976    9x300   20.30 +/- 0.09\n2013-06-04  20:28:49   1.62003   13x180   21.60 +/- 0.19\n\nis based on SDSS stars R mag, where R mag obtained via transformations \nugriz in BVRI (Lupton, 2005):\n\nn SDSS                  R     errR\n1 J054806.91+825053.0  17.648 0.015\n2 J054805.54+825456.1  16.750 0.013\n3 J054706.99+825234.5  15.573 0.012",
  "circularId": 14813,
  "createdOn": 1370629477000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 130603A: AAO optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 130603A"
}