{
  "bibcode": "2018GCN.22787....1G",
  "body": "J. D. Gropp (PSU) reports on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 180614A\n65s after the BAT trigger (Gropp et al., GCN Circ. 22780).\nNo optical afterglow consistent with the enhanced XRT position\n(Gropp et al. GCN Circ. 22780)\nis detected in the initial UVOT exposures.\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\nb              556     1872    136    >19.63\nuvm2       654     1797    136    >18.91\nu              300     1847    362    >20.06\nv              630     1773    136    >18.75\nuvw1        679     1823    136    >19.03\nuvw2        605     1922    155    >19.20\nwhite          87     1897    430    >21.15\nwhite_FC    87      237    147    >20.75\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.14 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 22787,
  "createdOn": 1529083241000,
  "email": "jdg44@psu.edu",
  "subject": "GRB 180614A: Swift/UVOT Upper Limits",
  "submitter": "Jeffrey Gropp at PSU  <jdg44@psu.edu>",
  "eventId": "GRB 180614A"
}