{
  "bibcode": "2009GCN..9802....1C",
  "body": "P.A. Curran (MSSL-UCL), T. N. Ukwatta (GSFC/GWU), report on behalf of\nthe Swift/UVOT team:\n\n\nThe Swift/UVOT began settled observations of the field of GRB 090814A\n170s after the BAT trigger (Ukwatta  et al., GCN 9793). The proposed\noptical counterpart (Updike et al. , GCN 9794) is marginally detected in\nthe u and white UVOT exposures. No optical afterglow consistent with the\nenhanced XRT position (Beardmore et al., GCN 9796)  is detected in the\nother UVOT exposures.\n\n\nPreliminary magnitudes and 3-sigma upper limits using the UVOT\nphotometric system (Poole et al. 2008, MNRAS, 383, 627) for for the\nfirst finding charts (FC) and subsequent exposures are:\n\nFilter  T_start(s) T_stop(s)   Exp(s)  Mag\n\nu       328\t   577          246\t> 20.16 (FC)\nwh      170\t   319          147\t> 20.70 (FC)\t\t\t\t\n\nu       328\t   8144         834\t21.05 +/- 0.35\nb       584\t   8340         599\t> 21.30\nv       658\t   7528         607\t> 20.18\t\t\nw1      708\t   7939         529\t> 20.66\nm2      683\t   7733         529\t> 20.5\nw2      708\t   7939         607\t> 20.81\t\t\t\t\nwh      170\t   7117         699\t21.54 +/- 0.27\n\n\nThe values quoted above are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.078 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 9802,
  "createdOn": 1250257927000,
  "email": "pac@mssl.ucl.ac.uk",
  "subject": "GRB 090814A: Swift/UVOT Observations",
  "submitter": "Peter Curran at MSSL  <pac@mssl.ucl.ac.uk>",
  "eventId": "GRB 090814A"
}