NOTE: uvot_fluxes_wget.pl vrs. 2023-03-23 fem at 240602d14h12m59s059033usUT
NOTE: Source region spec. is: 108.731 -6.206 3"
NOTE: Used archived BAT position of 108.73100  -6.20600
NOTE: position reference is GCN_Position_Notice

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

GRB 240601: Swift/UVOT Upper Limits

N. P. M. Kuin (UCL-MSSL) and ***BA*** (***BA INSTITUTION***)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 240601
104 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           104          254          147         >20.1
u_FC               316          566          246         >19.5
white              104         5897          530         >20.8
v                  645         1068           58         >18.1
b                  571         5692          236         >19.5
u                  316         5487          467         >19.6
w1                 694         1118           39         >18.4
m2                 669         1093           58         >18.6
w2                 620         5990          143         >19.2

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.412 in the direction of the burst
(Schlegel et al. 1998).