{
  "bibcode": "2005GCN..3085....1W",
  "body": "P.R. Wozniak, S. Evans, W.T. Vestrand, R. White, J. Wren (LANL)\non behalf of the RAPTOR team. \n\nThe RAPTOR A telescope responded to Swift-BAT trigger 107873 and began\noptical imaging of the burst location in 6.7 seconds from the time\nof receiving the alert (2.3 min. after GRB time). Photometry at the\nlocations of the two X-ray candidate counterparts to GRB 050309 reported\nby Barthelmy et al. (GCN 3082) shows no optical emission in a series of\n10 second exposures, each with the limiting magnitude R=15.0. A stack of\nthe first 10 images with the mean time of observation 4.2 min. after the\nGRB time had a magnitude limit of R=16.1.",
  "circularId": 3085,
  "createdOn": 1110502636000,
  "email": "wozniak@lanl.gov",
  "subject": "GRB 050309, Early optical limits from RAPTOR",
  "submitter": "Przemyslaw R. Wozniak at LANL  <wozniak@lanl.gov>",
  "eventId": "GRB 050309"
}