{
  "bibcode": "2013GCN.14802....1M",
  "body": "A. N. Morgan (UC Berkeley) reports:\n\nWe observed the field of GRB 130606A (Ukwatta, et al., GCN 14781) with the\n1.3m PAIRITEL located at Mt. Hopkins, Arizona. Observations began at\n2013-Jun-07 06h01m22s UT, ~8.9 hours after the Swift Trigger.  In  mosaics\n(effective exposure time of ~36.3 minutes) taken simultaneously in the J,\nH, and Ks filters, we detect the optical afterglow (e.g. Jelinek, et al.,\nGCN 14782; Xu et al., GCN 14783; Nagayama et al., GCN 14784).\n\nThe preliminary photometry yields:\n\npost burst\nt_mid (hr) exp.(m)  filt  mag   m_err\n9.44       36.3     J     17.83  0.06\n9.44       36.3     H     17.06  0.07\n9.44       36.3     Ks    16.4   0.1\n\nObservations are ongoing. All magnitudes are given in the Vega system,\ncalibrated to 2MASS. No correction for Galactic extinction has been made to\nthe above reported values.",
  "circularId": 14802,
  "createdOn": 1370598591000,
  "email": "qmorgan@gmail.com",
  "subject": "GRB 130606A: PAIRITEL NIR Afterglow Observations",
  "submitter": "Adam Morgan at U.C. Berkeley  <qmorgan@gmail.com>",
  "eventId": "GRB 130606A"
}