NOTE: uvot_fluxes_wget.pl vrs. 2020-11-03a fem at 221121d06h43m40s295647usUT
NOTE: Source region spec. is: 41.338 +43.190 3"
NOTE: Used archived BAT position of  41.33800  43.19000
NOTE: position reference is GCN_FOM_Notice

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

GRB 221120: Swift/UVOT Upper Limits

***UBS*** (***INSTITUTION***) and Eyles-Ferris (U. Leicester)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 221120
208 s after the BAT trigger (Eyles-Ferris et al., GCN Circ. 32955).
No optical afterglow consistent with the BAT position
*** POSITION REFERENCE is GCN_FOM_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               208          458          246         >19.9
white              490         4986          513         >21.3
v                  537         1305           97         >18.8
b                  463         4835          274         >20.2
u                  208         1369          314         >20.0
w1                 586         1355           78         >19.2
m2                 965         1329           58         >19.2
w2                 513         1281           97         >19.5

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.093 in the direction of the burst
(Schlegel et al. 1998).