{
  "bibcode": "2006GCN..4594....1C",
  "body": "S. B. Cenko (Caltech), W. Reach, and D. Faied (JPL / IPAC) report on\nbehalf of the Caltech-NRAO-Carnegie Collaboration:\n\nWe have imaged the field of GRB060123 (Palmer et al., GCN 4584) with the\nLarge Format Camera mounted on the Palomar 200-inch Hale Telescope.\nObservations consisted of 300 s frames in r' and i' beginning at\napproximately 8:35 January 25 UT (~ 34.2 hours after the burst).  In\nsingle r' and i' exposures, we find no new sources in the XRT error circle\nto a limiting magnitude of r',i' > 22.0.  This limiting magnitude was\ncalculated with reference to the SDSS calibration stars provided by Cool\net al. (GCN 4585).",
  "circularId": 4594,
  "createdOn": 1138188880000,
  "email": "cenko@srl.caltech.edu",
  "subject": "GRB 060123: P200 Observations",
  "submitter": "S. Bradley Cenko at Caltech  <cenko@srl.caltech.edu>",
  "eventId": "GRB 060123"
}