[vsnet-grb-info 3591] GRB 060807: UVOT Upper limits

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5425
SUBJECT: GRB 060807: UVOT Upper limits
DATE:    06/08/08 11:58:39 GMT
FROM:    Shashi Pandey at MSSL  <sbp2 at mssl.ucl.ac.uk>

S. B. Pandey and M. De Pasquale (UCL-MSSL) report on behalf of the 
Swift/UVOT
team:

The Swift UVOT began observing GRB 060807 (trigger #223217,
M. De Pasquale et al., GCN Circular 5409) 110 seconds after the BAT
trigger. No optical afterglow is detected in the XRT refined error
circle (Page et al, GCN Circular 5423) and at location of the
afterglow reported by Fynbo et al. 2006 (GCN Circular 5420).

The 3-sigma limiting magnitudes for the coadded images for the
UVOT filters are listed below:

Filter            T_range(s)      Exposure(s)     3sig_Upper limit

WHITE        110-6965          599                20.5
V                  215-12151        1796              20.7
B                  693-18617        1079              21.4
U                  669-17927        1317              21.2
W1               645-17012        1318              20.4
M2               621-12834        1099              20.7
W2               721-11238        1102              20.8

T_range is calculated from the time of the burst. No correction has
been made for the Galactic reddening of to E(B-V) = 0.03 mag
(Schlegel et al. 1998) along the line of sight to the burst.