{
  "bibcode": "2012GCN.12973....1P",
  "body": "D. A. Perley and E. Bellm (Caltech) report:\n\nWe imaged the location of GRB 120219A (Swenson et al., GCN 12964) with \nthe Keck I telescope (+ LRIS) on 2012-02-20 (UT) between 10:22-10:41 UT. \n  Observations suffered from strong attenuation due to clouds and poor \nseeing (>2 arcsec).  In a stack of our two deepest individual 200 second \nR-band frames (at 10:27 and 10:32) UT, we detect no source to a limiting \nmagnitude of R > 24.0 mag.  The afterglow is also not detected in our \ng-band or I-band images.  If the reported object of Xin et al. (GCN \n12966) represents a real source, this apparent fading confirms it as the \nafterglow of GRB 120219A.",
  "circularId": 12973,
  "createdOn": 1329740543000,
  "email": "dperley@astro.caltech.edu",
  "subject": "GRB120219A: Keck Observations",
  "submitter": "Daniel Perley at Caltech  <dperley@astro.caltech.edu>",
  "eventId": "GRB 120219A"
}