{
  "bibcode": "2008GCN..7887....1K",
  "body": "E. Klunko (ISTP), A. Pozanenko (IKI) on behalf of larger GRB follow up\ncollaboration  report:\n\nWe observed afterglow (Gomboc et al., GCN 7788; Chornock  et al., GCN 7789)\nof GRB 0800603A  (Paizis et al., GCN 7790)  with 1.5 m telescope of Sayan\nobservatory (Mondy) on Jun.03 between (UT) 18:21:30 - 18:43:55. The\nafterglow is detected in each frame of 120 s exposure.\nCoordinates  of the afterglow obtained from a combined image are R.A.(J2000)\n= 18 37 38.04  Dec.(J2000) = +62 44 39.4 with uncertainties of 0.3\". A\nphotometry of the afterglow obtained against several USNO-A2.0 stars is\nfollowing:\n\nT0+       Exposure  R_mag\n(mid)\n\n0.3015 d  8x120 s   20.49 +/- 0.03\n\nThe photometry might be slightly contaminated by the nearby source(s)\n(Perley\net al., GCN 7870, Rumyantsev et al., GCN 7860).\n\nIn comparison to the magnitude measured in early epoch (Perley et al. GCN\n7791) the index of power law decay is ~ 0.5 which is compatible with slow\ndecay index (alpha ~ 0.5) obtained by Kann et al. (GCN 7822).\n\nThe combined image can be found at\nhttp://grb.rssi.ru/GRB080603A/GRB080603A_R_AZT33.jpg\n\nThe message may be cited.",
  "circularId": 7887,
  "createdOn": 1213749503000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 0800603A: optical observation",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 080060"
}