{
  "bibcode": "2004GCN..2677....1C",
  "body": "M.Cwiok, L.Mankiewicz, K.Nawrocki, B.Pilecki, L.W.Piotrowski,\nG.Pojmanski, R.Salanski, M.Sokolowski, D.Szczygiel, G.Wrochna,\non behalf of \"Pi of the Sky / ASAS\" collaboration\n\nThe central part of HETE FOV containing GRB040825A error box\nwas observed by \"Pi of the Sky\" apparatus (http://grb.fuw.edu.pl)\nat Las Campanas Observatory for the night of 2004.08.25\nfrom 2:24 UT (1 h 6 min before the GRB)\ntill 9:35 UT (6 h 4 min after the GRB).\n\n10s exposures were taken continuously with 4s intervals\nby two CCD cameras. The single frame limiting magnitude\nwas strongly varying, due to thin clouds covering the sky.\nNo OT and no unknown objects have been observed within\nthe GRB040825A error box.\n\nPreliminary limits for frames PRECEDING, CONTAINING and following\nthe GRB are 10m, 10m, and 9.5m respectively.\n\nWe are working on better limits for integrated frames.\nMore details can be found at\nhttp://grb.fuw.edu.pl/pi/ot/grb040825a/\n-- \n  _____________________________________________________\n|                                                     |\n| dr hab. Grzegorz Wrochna     http://cern.ch/wrochna |\n| Soltan Institute for Nuclear Studies                |\n| Hoza 69                  e-mail: wrochna@fuw.edu.pl |\n| PL 00-681 Warsaw              tel: +48 22 628 18 93 |\n| Poland                        fax: +48 22 621 28 04 |\n|_____________________________________________________|",
  "circularId": 2677,
  "createdOn": 1093636941000,
  "email": "wrochna@fuw.edu.pl",
  "subject": "GRB040825A: optical limit before GRB",
  "submitter": "Grzegorz Wrochna at Soltan Inst.for Nuclear Studies  <wrochna@fuw.edu.pl>",
  "eventId": "GRB 040825A"
}