NOTE: uvot_fluxes_wget.pl vrs. 2024-08-27 fem at 251129d19h32m28s005656usUT NOTE: Source region spec. is: 174.520 -20.927 3" NOTE: Used archived BAT position of 174.52000 -20.92700 NOTE: position reference is GCN_Position_Notice =========== Draft Upper Limit Circular ======== GRB 251129: 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 251129 1232 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 white_FC 1232 1382 147 >19.7 white 1232 1382 147 >19.7 v 1388 1408 19 >17.1 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.055 in the direction of the burst (Schlegel et al. 1998).