[vsnet-grb-info 17297] GRB151205A: Initial UVOT observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  18662
SUBJECT: GRB151205A: Initial UVOT observations
DATE:    15/12/05 23:09:33 GMT
FROM:    Lea Hagen at PSU  <lea.zernow.hagen at gmail.com>

L. M. Z. Hagen (PSU) reports on behalf of the Swift/UVOT team:

UVOT took a finding chart exposure of 150 seconds with the White filter
starting 3131 seconds after the BAT trigger (Marshall et al., GCN Circ.
18659). No credible afterglow candidate has been found in the initial
data products. The 2.7'x2.7' sub-image covers 25% of the BAT error circle.
The typical 3-sigma upper limit has been about 19.6 mag. The 8'x8' region
for the list of sources generated on-board covers 100% of the BAT error
circle. The list of sources is typically complete to about 18 mag. No
correction has been made for the expected extinction corresponding to
E(B-V) of 0.02.