{
  "bibcode": "2013GCN.14950....1K",
  "body": "N. P. M. Kuin and S. R. Oates (UCL-MSSL) report on behalf of\nthe Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of\nGRB 130627B  3755 s after the BAT trigger (Oates et al.,\nGCN Circ. No. 14936 and 14939).\n\nNo optical afterglow consistent with the XRT position\nEvans et al. GCN Circ. No. 14947 is detected in the initial\nUVOT 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          3755         3905          147         >20.3\nwhite             3755         5137          344         >20.9\nv                 3911         5474          320         >19.5\nb                 4733         4932          197         >20.1\nu                 4526         4726          197         >19.7\nw1                4321        11240          757         >20.3\nm2                4116        10664         1082         >20.4\nw2                5143         5343          197         >19.7\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.40 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 14950,
  "createdOn": 1372455073000,
  "email": "npkuin@gmail.com",
  "subject": "GRB 130627B: Swift/UVOT Upper Limits",
  "submitter": "Paul Kuin at MSSL  <npkuin@gmail.com>",
  "eventId": "GRB 130627B"
}