{
  "bibcode": "2007GCN..7061....1Y",
  "body": "F. Yuan (U Mich), E.S. Rykoff (UCSB), W. Rujopakarn (Steward), H. Swan \n(U Mich), report on behalf of the ROTSE collaboration:\n\nROTSE-IIIc, located at the H.E.S.S. site at Mt. Gamsberg, Namibia, \nresponded to GRB 071112C (Swift trigger 296504; Perri, M. et. al., GCN \n7059). The first image was at 18:34:01.8 UT, 64.3 s after the burst \n(10.8 s after the GCN notice time). We detect the OT reported in GCN \n7059. The magnitude of the OT was roughly constant for the first few \nhundred seconds and then faded rapidly afterward. Further analysis is \nongoing. The unfiltered images are calibrated relative to USNO B1.0.\n\nMidtime UT       mag      magerror   mlim(of image)\n--------------------------------------------------------------------\n18:34:56.4   17.3       0.2     17.1\n18:38:52.2   17.1       0.1     18.0\n18:47:46.5   18.9       0.3     18.4\n\n\nA jpeg image of the OT (object 82) is available at \nhttp://www.rotse.net/images/gsb296504_3c011-020_key.jpg\n\nContinuing observations are in progress.",
  "circularId": 7061,
  "createdOn": 1194896636000,
  "email": "yuanfang@umich.edu",
  "subject": "GRB 071112C: ROTSE-III Confirmation of Optical Counterpart",
  "submitter": "Fang Yuan at ROTSE  <yuanfang@umich.edu>",
  "eventId": "GRB 071112C"
}