GCN Circular 16343

S. R. Oates (IAA-CSIC, MSSL-UCL) and J.L. Racusin (GSFC) 
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of the ground-detected 
GRB 140529A 65ks after the BAT trigger (Cummings, GCN. Circ. 16340).
No optical afterglow consistent with the XRT position 
(Evans et al., GCN Circ. 16342
Not found
 
 
) 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

white             65040       69412          287         >21.0
u                 65017       74873         1635         >21.0

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.13 in the direction of the burst
(Schlegel et al. 1998).