{
  "bibcode": "2013GCN.15628....1P",
  "body": "D. A. Perley (Caltech) reports on behalf of a larger collaboration:\n\nThe robotic Palomar 60-inch telescope automatically responded to GRB \n131229A (Page et al., GCN 15627) and began a sequence of 60-second image \nstarting at 06:44:54 UT, 5.5 minutes after the burst.\n\nIn the initial r-band image we identify no sources within the XRT error \ncircle down to a limiting magnitude of R > 20.5.  No source in the error \ncircle is detected in the i- or z-band filters either.\n\nWe do detect a source not present in USNO B1.0 well north of the XRT \nerror circle at RA=05:40:55.702, dec=-04:23:21.11 (J2000).  It does not \nappear to be fading in images taken so far.\n\nFurther P60 observations are ongoing.  NIR observations are encouraged.",
  "circularId": 15628,
  "createdOn": 1388301330000,
  "email": "dperley@astro.caltech.edu",
  "subject": "GRB 131229A: P60 nondetection",
  "submitter": "Daniel Perley at Caltech  <dperley@astro.caltech.edu>",
  "eventId": "GRB 131229A"
}