{
  "bibcode": "2000GCN...608....1H",
  "body": "A. Henden (USRA/USNO) reports on behalf of the USNO GRB team:\n\nWe have acquired preliminary BVRcIc all-sky photometry for\nthe field of GRB000307 with the USNOFS 1.0-m telescope on one\nphotometric night.  This 11x11arcmin field covers the IPN\nerror box and extends a little fainter than V=20.  All stars\nbrighter than V=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/grb000307.dat\nThis file will be updated if an optical transient is discovered.\nThe current photometry has a potential external zero-point\nerror of about two percent.\n\nThe astrometry in this file is based on linear plate\nsolutions with respect to USNO-A2.0.  The internal errors\nare less than 100mas.",
  "circularId": 608,
  "createdOn": 952718261000,
  "email": "aah@nofs.navy.mil",
  "subject": "GRB 000307, BVRI Field Photometry",
  "submitter": "Arne A. Henden at USNO/USRA  <aah@nofs.navy.mil>",
  "eventId": "GRB 000307"
}