{
  "bibcode": "2005GCN..3804....1B",
  "body": "A. J. Blustin (UCL-MSSL), A. Retter (PSU), F. Marshall (GSFC),\nM. Chester (PSU), N. Gehrels (GSFC) on behalf of the Swift/UVOT\nteam\n\nSwift/UVOT began observing the field of GRB050814 at 11:41:44 UT,\n167 s after the BAT trigger (Retter et al., GCN 3799). We detect no\nnew source with respect to the DSS image within the XRT error circle\n(Morris et al., GCN 3800) in summed images from any filter\ndown to the following 3-sigma magnitude upper limits:\n\nFilter   T_range     Exp (s)   3-sig UL (mag)\n\nV        167-13371   1375      20.5\nB        313-8353    1046      21.4\nU        299-7587    1187      21.2\nUVW1     285-6680    1194      20.3\nUVM2     271-14137   1144      20.7\nUVW2     328-12464   1277      20.8\n\nWhere T_range is the time range of the summed images in seconds\npost-trigger.\n\nThese magnitudes are based on preliminary zero-points, measured in\norbit, and will require refinement with further calibration.",
  "circularId": 3804,
  "createdOn": 1124064042000,
  "email": "ajb@mssl.ucl.ac.uk",
  "subject": "GRB050814: SWIFT/UVOT observation",
  "submitter": "Alexander Blustin at MSSL-UCL  <ajb@mssl.ucl.ac.uk>",
  "eventId": "GRB 050814"
}