{
  "bibcode": "2005GCN..3527....1R",
  "body": "James Rhoads reports on behalf of a larger collaboration:\nI observed the field of GRB 050607 with the 4m Mayall Telescope\nat Kitt Peak, starting on 2005 June 7 UT 09:20:46.\nObservations continued until morning twilight at 11:18 UT.\n\nWe detect a faint, fading optical source located at\n20:00:42.79 +09:08:31.5 (J2000), about 8 arcseconds\nfrom the XRT source.\nWe calibrated astrometry to the nearby USNO star, located\nat 20:00:42.70 9:08:35.0.  Our *relative* astrometry\nshould be good to < 0.5\".\n\nThe approximate I band magnitude is 22.65 (statistical error\nis 0.1 mag, systematic error is 0.2-0.3 mags) in our first \nexposure, which was 150 seconds commencing 563 seconds\nafter the burst.\n\nFurther analysis of the multiwavelength data set is in progress.",
  "circularId": 3527,
  "createdOn": 1118150176000,
  "email": "rhoads@stsci.edu",
  "subject": "Optical Afterglow of GRB 050607",
  "submitter": "James Rhoads at STScI  <rhoads@stsci.edu>",
  "eventId": "GRB 050607"
}