{
  "bibcode": "2005GCN..3240....1C",
  "body": "M.Cwiok, K.Krupska, K.Kwiecinska, L.Mankiewicz, K.Nawrocki,\nB.Pilecki, L.W.Piotrowski, M.Sokolowski, D.Szczygiel, G.Wrochna,\non behalf of \"Pi of the Sky\" collaboration\nhttp://grb.fuw.edu.pl\n\nThe GRB 050412 (GCN 3237) error box was observed by \"Pi of the Sky\"\napparatus at Las Campanas Observatory for most of the night.\nNo new object has been found within the Swift-BAT error box\nbefore, during or after the GRB. The limiting magnitude\non single exposures (10s) and sums of 20 images is 11m and 11.5m\nrespectively (unfiltered).",
  "circularId": 3240,
  "createdOn": 1113297259000,
  "email": "wrochna@fuw.edu.pl",
  "subject": "GRB050412: optical limit before and during GRB",
  "submitter": "Grzegorz Wrochna at Soltan Inst.for Nuclear Studies  <wrochna@fuw.edu.pl>",
  "eventId": "GRB 050412"
}