{
  "bibcode": "2014GCN.16409....1P",
  "body": "D. A. Perley (Caltech) reports:\n\nI imaged the field of GRB 140614B (Page et al., GCN 16394) using MOSFIRE \non the Keck I 10m telescope in the Ks-band filter.  A sequence of 12 \n36-second images was obtained at a midtime of 13:18 UT on 2014-06-15 \n(1.27 days after the Swift trigger).\n\nNo sources are detected within the XRT error circle (Evans et al, GCN \n16395) to a limiting mag of approximately Ks > 21.9 mag (3-sigma, \ncalibrating relative to 2MASS.)\n\nA faint source (Ks = 21.5 +/- 0.2 mag) is detected outside the XRT error \ncircle, at a position of RA = 21:30:31.364, dec = +14:55:48.79 (J2000).",
  "circularId": 16409,
  "createdOn": 1402845935000,
  "email": "dperley@astro.caltech.edu",
  "subject": "GRB 140614B: MOSFIRE Ks-band nondetection",
  "submitter": "Daniel Perley at Caltech  <dperley@astro.caltech.edu>",
  "eventId": "GRB 140614B"
}