TITLE:   GCN CIRCULAR
NUMBER:  8071
SUBJECT: GRB 080805: Swift/UVOT Upper Limits
DATE:    08/08/05 22:48:54 GMT
FROM:    Paul Ward at MSSL  <paw@mssl.ucl.ac.uk>

P. Ward (MSSL-UCL) and C. Pagani (PSU) report on behalf of
the Swift/UVOT team:

The Swift/UVOT observed the field of GRB 080805 starting 74 s after the 
BAT trigger (Pagani et al., GCN Circ. 8059).  We do not find a source in 
any of the UVOT observations inside the XRT error circle or at the 
position reported by Kruehler et al. (GCN 8060). The 3-sigma upper limits 
for detecting a source are:

Filter   T_start T_stop   Exp   Mag

White    76      175      98.5  > 20.70
White    5473    18024    1082  > 22.12
v        182     6083     332   > 19.81
b        5268    17112    1082  > 21.43
u        5061    5260     197   > 20.11
uvw1     4856    5055     197   > 19.99
uvm2     4650    6267     371   > 20.09
uvw2     5680    18053    219   > 20.12

The values quoted above are in the UVOT photometric system
(Poole et al. 2008, MNRAS, 383, 627). No correction has been
made for the expected extinction corresponding to E(B-V) of
0.043 mag in the direction of the burst (Schlegel et al. 1998).