{
  "bibcode": "2013GCN.14134....1C",
  "body": "S. B. Cenko (UC Berkeley) reports on behalf of a larger collaboration:\n\nWe have imaged the field of GRB130102A (Page et al., GCN 14127) with the\nrobotic Palomar 60 inch telescope (P60).  Observations began at 01:56 on\n2013 January 3 (~ 7.8 hours after the Swift trigger), and were obtained\nunder poor seeing conditions in the r', i', and z' filters.\n\nWe do not detect any sources within the enhanced XRT error localization\n(Osborne et al., GCN 14129).  Using nearby point sources from the AAVSO\nPhotometric All-Sky Survey (APASS) for calibration, we measure limiting\nmagnitudes of r' > 20.9, i' > 20.5 at this time.  We note that these\nlimits do not include a correction for the large Galactic extinction along\nthis line of sight.",
  "circularId": 14134,
  "createdOn": 1357241201000,
  "email": "cenko@srl.caltech.edu",
  "subject": "GRB 130102A: P60 Observations",
  "submitter": "S. Bradley Cenko at Caltech  <cenko@srl.caltech.edu>",
  "eventId": "GRB 130102A"
}