NOTE: uvot_fluxes_wget.pl vrs. 2024-08-27 fem at 260112d07h42m22s174576usUT
NOTE: Source region spec. is: 338.484 +4.426 3"
NOTE: Used archived BAT position of 338.48400   4.42600
NOTE: position reference is GCN_Position_Notice

=========== Draft Upper Limit Circular ========

GRB 260111: Swift/UVOT Upper Limits

N. P. M. Kuin (UCL-MSSL) and ***BA*** (***BA INSTITUTION***)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 260111
173 s after the BAT trigger (***Author*** et al., GCN Circ. ????).
No optical afterglow consistent with the BAT position
*** POSITION REFERENCE is GCN_Position_Notice ***
is detected in the initial UVOT exposures.
Preliminary 3-sigma upper limits using the UVOT photometric system
(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first
finding chart (FC) exposure and subsequent exposures are:

Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

u_FC               173          422          246         >19.3
white              452         1547          264         >20.4
v                  502         1597          136         >18.4
b                  428         1522          117         >19.2
u                  173         1498          343         >19.5
w1                 552         1473           78         >18.7

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.111 in the direction of the burst
(Schlegel et al. 1998).