NOTE: uvot_fluxes_wget.pl vrs. 2024-08-27 fem at 240906d10h40m09s801945usUT
NOTE: Source region spec. is: 345.80213 35.52267 4"
NOTE: Used archived XRT position of 345.80213  35.52267  4.00
NOTE: position reference is GCN_Circulars-37406

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

GRB 240905E: Swift/UVOT Upper Limits

S.P.R. Shilling (Lancaster) and S. Dichiara (PSU)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 240905E
116 s after the BAT trigger (Dichiara et al., GCN Circ. 37397).
No optical afterglow consistent with the XRT position
*** POSITION REFERENCE is GCN_Circulars-37406 ***
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           116          266          147         >21.4
white              116          266          147         >21.4
v                 3860         4060          197         >19.0
b                 4679         4689            9         >18.3
u                 4474         4674          197         >20.4
w1                4270         4469          197         >19.8
m2                4065         4265          197         >20.0
w2                3655         3855          197         >19.9

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.077 in the direction of the burst
(Schlegel et al. 1998).