NOTE: uvot_fluxes_wget.pl vrs. 2024-08-27 fem at 251003d10h30m37s957573usUT
NOTE: Source region spec. is: 18.52838 56.49081 4"
NOTE: Used archived XRT position of  18.52838  56.49081  4.00
NOTE: position reference is GCN_Circulars-42071

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

GRB 251003A: Swift/UVOT Upper Limits

***UBS*** (***INSTITUTION***) and A. P. Beardmore (U. Leicester)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 251003A
79 s after the BAT trigger (Beardmore et al., GCN Circ. 42070).
No optical afterglow consistent with the XRT position
*** POSITION REFERENCE is GCN_Circulars-42071 ***
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            79          229          147         >20.4
white               79          229          147         >20.4
u                  291          474          180         >20.2

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.408 in the direction of the burst
(Schlegel et al. 1998).