{
  "bibcode": "2001GCN..1042....1H",
  "body": "A. Henden (USRA/USNO) reports on behalf of the USNO GRB team:\n\nWe have acquired shallow BVRcIc all-sky photometry for\nan 11x11 arcmin field that covers the center of the\nerror box for GRB010412 with the USNOFS 1.0-m telescope\non one photometric night.  Stars brighter than\nV=13.5 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/grb010412.dat\nThe current photometry has a potential external zero-point\nerror of about two 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  Since this is a crowded field, you should check the DSS images\nand only use stars for calibration that do not have neighbors.\nFurther calibration of this field will be performed if\nan optical afterglow is identified.",
  "circularId": 1042,
  "createdOn": 987607750000,
  "email": "aah@nofs.navy.mil",
  "subject": "GRB010412, field photometry",
  "submitter": "Arne A. Henden at USNO/USRA  <aah@nofs.navy.mil>",
  "eventId": "GRB 010412"
}