{
  "bibcode": "2007GCN..6953....1B",
  "body": "J. S. Bloom, D. A. Perley (UC Berkeley) and D. L. Starr (UC Berkeley,  \nLCOGT) report:\n\n\"We observed the field of the optical transient (Schaefer et al. GCN  \n6948) of GRB 071020A (Holland et al. GCN 6949) with the 1.3m PAIRITEL  \non Mt. Hopkins starting at 2007-10-20 09:18 UT (~2h16m after the GRB,  \nonce the field was within telescope limits). In a stack of 2190 sec  \ntotal integration time (mean time = 2007-10-20 09:46 UT), we detect  \nthe source in the J-band at position:\n\n      ra= 07:58:39.78 dec = +32:51:40.4\n\n(J2000; rms uncertainty relative to 2MASS of 250 mas in each  \ncoordinate) with J=19.06 +/- 0.23 mag and H=18.71 +/- 0.30 (only  \nmarginally detected). The source appears to have faded in subsequent  \nimaging.\"\n\nThis message may be cited.",
  "circularId": 6953,
  "createdOn": 1192897234000,
  "email": "jbloom@astron.berkeley.edu",
  "subject": "GRB 071020A: IR Imaging with PAIRITEL",
  "submitter": "Josh Bloom at UC Berkeley  <jbloom@astron.berkeley.edu>",
  "eventId": "GRB 071020A"
}