NOTE: uvot_fluxes_wget.pl vrs. 2024-08-27 fem at 250104d12h37m00s819359usUT
NOTE: Source region spec. is: 22.0638 -5.0518 3"
NOTE: Used archived opt source position of  22.06380  -5.05180  3.00
NOTE: position reference is GCN_Circulars-38795
WARNING: t_start for light curve (120982) and t_start from the exposure report (115348) do not agree.
  Replace ??? in draft Circular with correct value.

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

GRB 250103A: Swift/UVOT Upper Limits

***UBS*** (***INSTITUTION***) and ***BA*** (***BA INSTITUTION***)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 250103A
***???*** s after the SVOM trigger (***Author*** et al., GCN Circ. ????).
No optical afterglow consistent with the optical position
*** POSITION REFERENCE is GCN_Circulars-38795 ***
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 initial exposures are:

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

b               121231       121310           79         >20.0
u               121147       121226           79         >19.0
w1              120982       121142          157         >19.1
w2              121316       121614          293         >19.7

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.040 in the direction of the burst
(Schlegel et al. 1998).