NOTE: uvot_fluxes_wget.pl vrs. 2024-08-27 fem at 241213d11h57m03s705017usUT
NOTE: Source region spec. is: 116.17000 35.27883 4"
NOTE: Used archived XRT position of 116.17000  35.27883  4.00
NOTE: position reference is GCN_Circulars-38552

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

GRB 241213A: Swift/UVOT Upper Limits

S.P.R. Shilling (Lancaster) and Gupta (NASA GSFC)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 241213A
106 s after the BAT trigger (Gupta et al., GCN Circ. 38547).
No optical afterglow consistent with the XRT position
*** POSITION REFERENCE is GCN_Circulars-38552 ***
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           106          256          147         >21.5
u_FC               318          568          246         >19.7
white              106          945          259         >21.3
v                  648         4786          236         >19.6
b                  573          766           39         >19.7
u                  318          742          265         >19.8
w1                 698         5045           67         >19.3
m2                 673         4991          216         >20.4
w2                 624         4581          236         >20.5

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.060 in the direction of the burst
(Schlegel et al. 1998).