TITLE: GCN CIRCULAR NUMBER: 7982 SUBJECT: GRB 080714: Swift/UVOT Detection of an Optical Afterglow DATE: 08/07/15 16:06:40 GMT FROM: Frank Marshall at GSFC F.E. Marshall (NASA/GSFC) and M. Perri (ASDC) report on behalf of the Swift/UVOT team: The Swift/UVOT observed the field of GRB 080714 starting 90 s after the BAT trigger (Perri et al., GCN Circ. 7978). The burst is in a crowded field only 2.5 degrees from the Galactic Plane. We find a fading source inside the enhanced XRT error circle (Goad et al., GCN Circ. 7980) in observations with the White and V filters. The preliminary position for the afterglow is: RA(J2000) = 12:32:25.44 = 188.1060 DEC(J2000) = -60:16:40.4 = -60.2779 with a 90% confidence error radius of about 0.8 arcsec. The measured magnitudes in the UVOT photometric system (Poole et al. 2008, MNRAS, 383, 627) and 3-sigma upper limits for detecting a source in the first two finding chart (FC) exposures and subsequent co-added exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag white (FC) 90 189 98 20.2 +/- 0.2 white 4290 4489 197 >20.7 v (FC) 197 596 393 19.1 +/- 0.2 v 5896 6095 197 >19.7 b 677 4284 206 >20.2 u 652 12382 1137 >20.7 uvw1 628 6505 236 >19.7 uvm2 602 6300 236 >19.9 uvw2 707 16498 1007 >20.8 The values quoted above are not corrected for the predicted large, but uncertain, Galactic extinction the direction of the burst (Schlegel et al. 1998).