TITLE: GCN CIRCULAR NUMBER: 7916 SUBJECT: GRB 080701A: Swift/UVOT Upper Limits DATE: 08/07/01 22:11:42 GMT FROM: Frank Marshall at GSFC F.E. Marshall (NASA/GSFC) and M.C. Stroh (PSU) report on behalf of the Swift/UVOT team: The Swift/UVOT observed the field of GRB 080701A starting 2983 s after the BAT trigger (Stroh et al., GCN Circ. 7910). We do not find a source in any of the UVOT observations inside the enhanced XRT error circle (Evans et al., GCN Circ. 7914). The 3-sigma upper limits for detecting a source in the first finding chart (FC) exposure and co-added frames are: Filter T_start(s) T_stop(s) Exp(s) Mag (3-sigma UL) white (FC) 2983 3082 98 >19.7 white 2983 9403 736 >21.0 v 3914 4113 197 >19.1 b 3298 4934 393 >20.2 u 3093 4728 393 >19.9 uvw1 4324 4523 197 >20.0 uvm2 4119 4318 197 >19.6 uvw2 3709 3908 197 >20.2 The values quoted above are not corrected for the expected Galactic extinction corresponding to a reddening of E(B-V) = 0.54 mag in the direction of the burst (Schlegel et al. 1998).