TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4450
SUBJECT: GRB 060108: Swift/UVOT upper limits
DATE:    06/01/09 02:52:57 GMT
FROM:    Alexander Blustin at MSSL-UCL  <ajb@mssl.ucl.ac.uk>

A. J. Blustin (UCL-MSSL), S. R. Oates (UCL-MSSL), F. Marshall (GSFC),
A. Smale (NASA HQ), N. Gehrels (GSFC) on behalf of the Swift/UVOT team

The Swift/UVOT began observing the field of GRB 060108 at 14:40:27 on
2006-01-08 whilst settling on the target, 76 s after the BAT trigger
(Oates et al., GCN 4443). No new source is detected at the XRT position
(Page et al., GCN 4444) in coadded images with any of the filters down
to the following 3-sigma magnitude upper limits. These values are not
corrected for Galactic extinction; E(B-V) = 0.018.

Filter   T_range(s)  Exp(s)  3sigUL(mag)

V        76-1097     357.3   19.4
B        459-887     99.6    19.7
U        404-833     99.6    19.3
W1       350-5624    521.1   20.0
M2       296-5195    999.4   20.6
W2       567-995     99.6    19.3
White    512-941     99.6    19.7