GRB 110426A: 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 110426A
7319 s after the MAXI trigger (***BA*** et al., GCN Circ. ????).
No optical afterglow consistent with the MAXI position
*** POSITION REFERENCE is GCN_FOM_Notice ***
is detected in the initial UVOT exposures.
Preliminary 3-sigma upper limits using the UVOT photometric system
(Poole et al. 2008, MNRAS, 383, 627) for the initial exposures are:

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

v                14780        20808          221         >19.2
b                 7924        20003          528         >20.6
u                 7720        19841          528         >20.4
w1                7319        25486         1184         >20.9
m2               20812        21266          447         >20.4
w2                8130        20644         1921         >21.5

The values quoted above are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.07 in the direction of the burst
(Schlegel et al. 1998).