{
  "bibcode": "2012GCN.13482....1K",
  "body": "N. P. M. Kuin (MSSL-UCL) and C. J. Saxton (UCL-MSSL)  report\non behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 120714A\n3259 s after the BAT trigger (Saxton et al., GCN Circ. 13464).\n\nNo optical afterglow consistent with the XRT position (Beardmore etal.,\nGCN Circ. No. 13470) is detected in the initial UVOT exposures.\n\nPreliminary 3-sigma upper limits using the UVOT photometric system\n(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first\nfinding chart (FC) exposure and subsequent exposures are:\n\nFilter         T_start(s)   T_stop(s)      Exp(s)         Mag\n\nwhite_FC          3259         3409          147         >19.9\nwhite             3259        28944         2696         >21.8\nv                 3416        21584         2027         >20.4\nb                 4237        28344         2135         >21.1\nu                 4031        27431         1278         >20.7\nw1                3826        23171         1058         >21.0\nm2                3621        22489         1279         >21.0\nw2                4648        17394         1667         >21.5\n\nA possible source was marginally present in the u band during the first two\nimages, but not seen later, nor in any of the other bands.\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.06 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 13482,
  "createdOn": 1342381482000,
  "email": "npkuin@gmail.com",
  "subject": "GRB120714A: Swift/UVOT upper limits",
  "submitter": "Paul Kuin at MSSL  <npkuin@gmail.com>",
  "eventId": "GRB 120714A"
}