{
  "circularId": 4986,
  "subject": "Possible GRB060421: BART limits",
  "format": "text/plain",
  "submitter": "Martin Jelinek at Inst.Astrophys.Andalucia,Granada  <mates@iaa.es>",
  "body": "Jan Strobl, Martin Topinka, Martin Nekola and René Hudec\n(ASU Ondrejov, Czech Republic),\nPetr Kubánek (ISDC Versoix, Swtzerland and ASU Ondrejov)\nand Martin Jelínek (IAA Granada)\n\nreport\n\nRobotic telescope BART located in Ondrejov observatory in\nCzech Republic, followed the Swift trigger 206257 (Goad et al,\nGCN 4985). The observation in fully automatic mode (under\ncontrol of RTS2), started 33.7s after the Swift trigger time.\nWe did not find any new optical source. Particularly we set\nthe following limits:\n\nTmean   Exp   limit   \n44s     20s  B>14.2 \n98.0s   20s  V>15.2\n152s    20s  i>15.3\n206s    20s  z>14.3\n184s  8x45s  R>15.3\n\nThe magnitudes are calibrated against USNO-A2.0.",
  "email": "mates@iaa.es",
  "editedOn": 1731924632173,
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov>",
  "eventId": "GRB 060421",
  "bibcode": "2006GCN..4986....1S",
  "createdOn": 1145605554000,
  "version": 2
}