{
  "bibcode": "2006GCN..4667....1M",
  "body": "D-S. Moon and S. B. Cenko (Caltech) report on behalf of a larger\ncollaboration:\n\nWe have imaged the field of GRB060204b (Falcone et al., GCN 4655) with the\nLow-Resolution Imaging Spectrometer mounted on the 10-m Keck I telescope.\nObservations consisted of 12 x 180 s images taken simultaneously in V and\nI, beginning approximately 18 minutes after the burst.  We clearly detect\nthe afterglow candidate proposed by Guidorzi et. al (GCN 4661).\nFurthermore, the object fades by approximately 1.4 magnitudes during our\nI-band observations, and we therefore confirm that this object is the\nafterglow of GRB060204b.  In our first I-band image, the afterlow had a\nmagnitude of 19.4 +/- 0.3 (calculated with respect to the USNO-B1\ncatalog).",
  "circularId": 4667,
  "createdOn": 1139099569000,
  "email": "cenko@srl.caltech.edu",
  "subject": "GRB 060204b: Keck/LRIS Afterglow Confirmation",
  "submitter": "S. Bradley Cenko at Caltech  <cenko@srl.caltech.edu>",
  "eventId": "GRB 060204B"
}