{
  "subject": "XRF 120118A: early optical limit by \"Pi of the Sky\"",
  "circularId": 12855,
  "bibcode": "2012GCN.12855....1B",
  "submitter": "Agnieszka Majczyna at Nat.Center for Nuclear Res.  <agnieszka.majczyna@fuw.edu.pl>",
  "body": "T.Batsch,A.Majcher,A.Majczyna,K.Nawrocki,M.Sokolowski,G.Wrochna (NCBJ,\nSwierk),\nM.Cwiok,L.W.Piotrowski,A.F.Zarnecki (University of Warsaw),\nK.Malek,L.Mankiewicz,R.Opiela,M.Siudek,V.Repei (CFT PAN),\nG.Kasprowicz,M.Zaremba (Warsaw University of Technology),\nfrom the \"Pi of the Sky\" collaboration ( http://grb.fuw.edu.pl ).\n\nThe wide field \"Pi of the Sky South\" telescope, installed in\nthe private observatory of Alain Maury in San Pedro de Atacama\n(http://grb.fuw.edu.pl/pi/index.html#spda_site.htm) observed field of\nXRF 120118A few minutes before and ~100s after the flash.\nNo new source brighter than about 11.3 mag has been identified on 10s\nexposures and no source brighter than 11.7 mag on 20 coadded frames:\n\nt_start - t0 [s]    t_exp     start (UT)  end (UT)     3-sigma limit\n\n     -290             10s          06:00:14    06:00:24     11.2\n      +99             10s          06:06:43    06:06:53     11.3\n     +129           20x10s         06:07:13    06:12:12     11.7\n\nwhere limit is based on the reference star magnitudo in V filter.\n\nWe acknowledge great support received from Alain Maury at SPdA Observatory.",
  "editedOn": 1777052620153,
  "eventId": "XRF 120118A",
  "createdOn": 1326922760000,
  "version": 2,
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov>",
  "email": "agnieszka.majczyna@fuw.edu.pl"
}