{
  "bibcode": "2017GCN.21351....1M",
  "body": "F. E. Marshall (NASA/GSFC) and A. D'Ai (INAF-IASFPA)\nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 170714A\n384 s after the BAT trigger (D'Ai et al., GCN Circ. 21340).\nThere is weak evidence for a fading source consistent with the\nposition of the z-band afterglow candidate reported by\nde Ugarte Postigo et al. (GCN Circ. 21346).\nPreliminary detections and 3-sigma upper limits using the UVOT photometric system\n(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the initial exposures are:\n\nFilter         T_start(s)   T_stop(s)      Exp(s)         Mag\nv                  384         1695          175         >18.6\nb                  496         1644          155         20.0 +/- 0.33\nb                 5390        24672         1011         >20.3\nu                  471         1619          284         20.1 +/- 0.35\nu                 5185        30412         2351         20.4 +/- 0.18\nu                81432        92912         1509         >20.7\nw1                 446         1594          136         >21.0\nm2                6006        29000         2637         >20.9\nw2                5596        34449         3032         >22.0\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.03 in the direction of the burst\n(Schlegel et al. 1998).\n\n[GCN OPS NOTE(17jul17): Per author's request, please see GCN Circ 21353\nfor corrections to the above table.]",
  "circularId": 21351,
  "createdOn": 1500319684000,
  "email": "femarsha@khamseen.gsfc.nasa.gov",
  "subject": "GRB 170714A: Swift/UVOT Observations",
  "submitter": "Frank Marshall at GSFC  <femarsha@khamseen.gsfc.nasa.gov>",
  "eventId": "GRB 170714A"
}