{
  "bibcode": "2009GCN..8829....1U",
  "body": "Adria C. Updike and Dieter H. Hartmann (Clemson University) report:\n\nUsing the KPNO 4m telescope and the NEWFIRM instrument, we observed the\nfield of GRB 090118 (GCN 8825, Copete et al.) beginning 11.6 hours after\nthe burst in the J and H bands.  Within the XRT error circle (Rowlinson &\nPage, GCN 8828) we detect a faint source at coordinates\n\nRA   03:19:18.6\nDec +18:24:54.3\n\nVariability has not been confirmed.  Further observations are planned.\n\n\nTime after burst      Band     Magnitude\n-------------------------------------------\n11.6 hours             J       21.0 +/- 0.5\n12.5 hours             H       20.2 +/- 0.4\n\n\nA total of 40 minutes of exposures were taken in each band and the results\nwere stacked.  Magnitudes are calibrated to the 2MASS point source catalog\nand against a nearby star (RA 03:19:16.7, Dec +18:25:14, J = 14.05).  No\ncorrection has been made for galactic extinction.",
  "circularId": 8829,
  "createdOn": 1232400552000,
  "email": "aupdike@clemson.edu",
  "subject": "GRB 090118: KPNO 4m Detection of Candidate Afterglow",
  "submitter": "Adria C. Updike at Clemson U  <aupdike@clemson.edu>",
  "eventId": "GRB 090118"
}