{
  "bibcode": "2006GCN..4865....1H",
  "body": "S. D. Hunsberger (PSU), D. Grupe (PSU), and F. Marshall (GSFC)\non behalf of the Swift UVOT team:\n\nThe UVOT took a finding chart exposure of 200 seconds with the\nV filter starting 14.4 hours after the BAT trigger. No afterglow\ncandidate has been found in the 2.7'x2.7' sub-image which\ncovers 100% of the XRT error circle. The 3-sigma UL at the\nXRT position is 0.9 cps or 18.0 mag. No correction has\nbeen made for the expected extinction of about 0.6 magnitudes.",
  "circularId": 4865,
  "createdOn": 1142188837000,
  "email": "sdh3@psu.edu",
  "subject": "GRB060312: Swift UVOT observation",
  "submitter": "Sally Hunsberger at PSU/Swift  <sdh3@psu.edu>",
  "eventId": "GRB 060312"
}