[vsnet-grb-info 2941] GRB 060211B: Swift/UVOT Upper Limits

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4778
SUBJECT: GRB 060211B: Swift/UVOT Upper Limits
DATE:    06/02/18 12:25:30 GMT
FROM:    Padi Boyd at GSFC  <padi at milkyway.gsfc.nasa.gov>

P. Boyd (GSFC), S. Mateos (U Leicester) and F. Marshall (GSFC)
on behalf of the Swift/UVOT team report:

The Swift/UVOT began observing the field of GRB 060211B at
15:56:39 UT on 2006-02-11, approximately 83 s after the BAT
trigger (Mateos et al., GCN 4739). No source is detected in the
refined XRT error circle (Page et al., GCN 4745) in the initial
V finding chart, nor the summed images down to the following
3-sigma magnitude upper limits:

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

V       83-283          200     19.4
V       83-7768         869     20.5
B       290-7213        718     21.4
U       615-6955        301     20.4
UVW1    591-8168        550     20.8
UVM2    567-7972        490     20.8
UVW2    519-7604        278     21.2
White   494-7359        236     20.7

Reported times are in seconds since the BAT trigger.
These magnitudes are uncorrected for the expected
Galactic extinction corresponding to E(B-V) = 0.407.