{
  "bibcode": "2011GCN.12684....1W",
  "body": "J. Wren, W. T. Vestrand, P. Wozniak, and H. Davis\nof Los Alamos National Laboratory report:\n\nThe RAPTOR wide-field optical monitors were observing the location of\nGRB 111209A (Hoversten et al., GCN 12632) during the gamma-ray emitting\ninterval as seen by the Swift BAT (Palmer et al., GCN 12640).  Our\nsystem acquired 10 s exposures at 20 s intervals during the entire\nemission period.  We have analyzed the the 77 images taken between\nT-150 and T+1400 and we do not detect the counterpart to a typical\n3-sigma limiting magnitude of 10.3.  Our unfiltered images were\ncalibrated to the Tycho-2 V-band.",
  "circularId": 12684,
  "createdOn": 1323970340000,
  "email": "jwren@nis.lanl.gov",
  "subject": "GRB 111209A: RAPTOR Limits Before and During the Gamma-ray Emitting Interval",
  "submitter": "James Wren at LANL  <jwren@nis.lanl.gov>",
  "eventId": "GRB 111209A"
}