NOTE: uvot_fluxes_wget.pl vrs. 2018-01-16 fem at 180709d14h11m53s533219usUT
NOTE: Source region spec. is: 38.1178 +60.3489 4"
NOTE: Used archived XRT position of  38.11780  60.34890  4.00
NOTE: position reference is GCN_Notice

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

GRB 180709A: Swift/UVOT Upper Limits

A. A. Breeveld (UCL-MSSL) and F. E. Marshall (NASA/GSFC)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 180709A
115 s after the BAT trigger (Marshall et al., GCN Circ. 22930).
No optical afterglow consistent with the XRT position
*** POSITION REFERENCE is GCN_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           115          264          147         >20.9
u_FC               273          523          246         >20.3
white              115          264          147         >20.9
u                  273          523          246         >20.3

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 2.72 in the direction of the burst
(Schlegel et al. 1998).