{
  "bibcode": "2012GCN.13893....1M",
  "body": "A. N. Morgan, and J. S. Bloom (UC Berkeley) report:\n\nWe observed the field of GRB 121024A (Pagani et al., GCN 13886) with\nthe 1.3m PAIRITEL located at Mt. Hopkins, Arizona. Observations began\nat 2012-Oct-24 07h31m47s UT, ~4.6 hours after the Swift Trigger.  In\nmosaics (effective exposure time of 0.46 hours) taken simultaneously\nin the J, H, and K filters, we detect a source at the optical\nafterglow location (Pagani et al., GCN 13886; Klotz et al., GCN 13887;\nJelinek et al., GCN 13888; LaCluyze et al., GCN 13889; Knust et al.\nGCN 13891).\n\nThe preliminary photometry yields:\n\npost burst\nt_mid (hr) exp.(hr) filt  mag    m_err\n6.06       0.46     J     >18.4  3sig\n6.06       0.46     H     17.1   0.2\n6.06       0.46     Ks    >16.2  3sig\n\nAll magnitudes are given in the Vega system, calibrated to 2MASS. No\ncorrection for Galactic extinction has been made to the above reported\nvalues.",
  "circularId": 13893,
  "createdOn": 1351108365000,
  "email": "qmorgan@gmail.com",
  "subject": "GRB 121024A: PAIRITEL NIR Detection",
  "submitter": "Adam Morgan at U.C. Berkeley  <qmorgan@gmail.com>",
  "eventId": "GRB 121024A"
}