{
  "bibcode": "2006GCN..5216....1T",
  "body": "N. Tanvir (U. of Hertfordshire), E. Rol (U. of Leicester)\nand P. Hewett (IoA, Cambridge) report:\n\nWe imaged the Swift detected burst GRB 060604 (Page et al. GCN 5212)\nwith the AUX-port camera on the WHT at June 5.169 UT.  A 300s R-band exposure\nshows a source at the position of the UVOT counterpart which has apparently\nfaded, thus confirming the afterglow ID.\n\nBy comparison with the two nearby USNO stars, we estimate a magnitude\nof R=21.4 with an uncertainty (given the rough calibration) of 0.3 mag.",
  "circularId": 5216,
  "createdOn": 1149503249000,
  "email": "nrt@ast.cam.ac.uk",
  "subject": "GRB 060604 optical photometry",
  "submitter": "Nial Tanvir at IofA U.Cambridge  <nrt@ast.cam.ac.uk>",
  "eventId": "GRB 060604"
}