TITLE: GCN CIRCULAR NUMBER: 7099 SUBJECT: GRB 071117: Initial Swift/UVOT observations DATE: 07/11/17 16:14:27 GMT FROM: Daniel E. Vanden Berk at PSU/Swift D. E. Vanden Berk (PSU) and T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift UVOT Team: UVOT took a finding chart exposure of 100 seconds with the White (160-650 nm) filter starting 2852 seconds after the BAT trigger. No afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers 100% of the XRT error circle. The typical 3-sigma upper limit has been about 18.5 mag. The 8'x8' region for the list of sources generated on-board covers 100% of the XRT error circle. The list of sources is typically complete to about 18 mag. No correction has been made for the extinction of E(B-V) = 0.024.