NOTE: uvot_fluxes_wget.pl vrs. 2024-08-27 fem at 251005d19h33m46s347512usUT
NOTE: Source region spec. is: 75.68333 16.88008 4"
NOTE: Used archived XRT position of  75.68333  16.88008  4.00
NOTE: position reference is GCN_Circulars-42113

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

GRB 251005A: Swift/UVOT Upper Limits

***UBS*** (***INSTITUTION***) and K. L. Page (U. Leicester)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 251005A
123 s after the BAT trigger (Page et al., GCN Circ. 42113).
No optical afterglow consistent with the XRT position
*** POSITION REFERENCE is GCN_Circulars-42113 ***
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

white_FC           123          273          147         >21.6
u_FC               336          586          246         >19.9
white              123         1536          392         >21.3
v                  666         1586          117         >19.4
b                  592         1676          108         >19.8
u                  336         1659          343         >20.0
w1                 715         1461           78         >19.4

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.461 in the direction of the burst
(Schlegel et al. 1998).