NOTE: uvot_fluxes_wget.pl vrs. 2023-03-23 fem at 240222d22h55m40s707104usUT
NOTE: Source region spec. is: 143.2249 -68.0307 4"
NOTE: Used archived XRT position of 143.22490 -68.03070  4.00
NOTE: position reference is GCN_Notice

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

GRB 240222A: Swift/UVOT Upper Limits

***UBS*** (***INSTITUTION***) and P. D'Avanzo (INAF-OAB)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 240222A
98 s after the BAT trigger (D'Avanzo et al., GCN Circ. 35770).
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            98          248          147         >21.8
u_FC               312          561          246         >20.1
white               98         1192          353         >22.3
v                  642         1068           58         >19.0
b                  567         1168           58         >20.2
u                  312         1142          285         >20.4
w1                 691         1118           39         >18.9
m2                 666          861           39         >18.9
w2                 617          811           39         >18.7

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.166 in the direction of the burst
(Schlegel et al. 1998).