{
  "bibcode": "2012GCN.12860....1M",
  "body": "A. N. Morgan,  and J. S. Bloom (UC Berkeley) report:\n\nWe observed the field of GRB 120119A (Beardmore et al., GCN 12859) with the\n1.3m PAIRITEL located at Mt. Hopkins, Arizona. Observations began at\n2012-Jan-19 04h05m23s UT, ~53 seconds after the Swift trigger.  In\n mosaics (effective exposure time of 560 seconds) taken simultaneously in\nthe J, H, and Ks filters, we detect a source at the position of the optical\nafterglow.\n\nThe preliminary photometry yields:\n\npost burst\nt_mid (m)  exp.(s)  filt  mag    m_err\n10.3       560      J     14.35  0.02\n10.3       560      H     13.10  0.02\n10.3       560      Ks    11.95  0.02\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.  Observations are continuing.\n\n[GCN OPS NOTE(19jan11): Per author's request, the start time in the 3rd line\nwas changed from \"04h07m15s UT, ~2.7 minutes\" to \"04h05m23s UT, ~53 seconds\".]",
  "circularId": 12860,
  "createdOn": 1326948168000,
  "email": "qmorgan@gmail.com",
  "subject": "GRB 120119A: PAIRITEL NIR Detection",
  "submitter": "Adam Morgan at U.C. Berkeley  <qmorgan@gmail.com>",
  "eventId": "GRB 120119A"
}