{
  "bibcode": "2009GCN..9878....1P",
  "body": "S. B. Pandey, W. Zheng, F. Yuan and C. Akerlof (U Mich), report on behalf\nof the\nROTSE collaboration:\n\nROTSE-IIIa, located at the Siding Spring Observatory Australia, responded ~\n283 sec after the GBM trigger 273582310 (Bissaldi E. & Connaughton V. GCNC\n9866). The Set of images starting ~ 1.4 hours after the trigger covered the\nGRB 090902B location. The OT (Perley et al. GCNC 9870, Kennea & Stratta\nGCNC 9868) was detected at 15.9+-0.2 mag in the sum of 30x60 sec exposures.\n\nThe images taken by ROTSE-IIIc (located naer the H.E.S.S. site at Mt.\nGamsberg, Namibia) around 6.6 hours after the burst marginally detect the\nOT, indicating a decay of ~ 2 magnitudes. The unfiltered images were\ncalibrated relative to USNO B1.0. Further analysis is in progress.",
  "circularId": 9878,
  "createdOn": 1252010417000,
  "email": "shaship@umich.edu",
  "subject": "GRB 090902B: ROTSE-III Detection of Optical Afterglow",
  "submitter": "Shashi Bhushan Pandey at ROTSE  <shaship@umich.edu>",
  "eventId": "GRB 090902B"
}