{
  "bibcode": "2000GCN...664....1H",
  "body": "A. Henden (USRA/USNO) reports on behalf of the USNO GRB team:\n\nWe have acquired preliminary UBVRcIc all-sky photometry for\nan 11x11 arcmin field that covers the\nerror box for GRB000424 with the USNOFS 1.0-m telescope on one\nmarginally photometric night.  Stars brighter than\nV=14 are saturated and should be used with care.\nWe have placed the photometric data on our anonymous ftp site:\nftp://ftp.nofs.navy.mil/pub/outgoing/aah/grb/grb000424.dat\nThe current photometry has a potential external zero-point\nerror of about three percent.  The astrometry in this file\nis based on linear plate solutions with respect to USNO-A2.0.\nThe internal errors are less than 100mas.\n  Further calibration of this field will be performed if\nan optical afterglow is identified.",
  "circularId": 664,
  "createdOn": 957396681000,
  "email": "aah@nofs.navy.mil",
  "subject": "GRB000424, UBVRI field photometry",
  "submitter": "Arne A. Henden at USNO/USRA  <aah@nofs.navy.mil>",
  "eventId": "GRB 000424"
}