NOTE: uvot_fluxes_wget.pl vrs. 2020-11-03a fem at 230210d18h41m21s656239usUT
NOTE: Source region spec. is: 50.745 +7.153 3"
NOTE: Used archived BAT position of  50.74500   7.15300
NOTE: position reference is GCN_Position_Notice

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

GRB 230210: Swift/UVOT Upper Limits

***UBS*** (***INSTITUTION***) and ***BA*** (***BA INSTITUTION***)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 230210
127 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           127          277          147         >20.4
u_FC               285          535          246         >19.7
white              127         5182          493         >20.8
u                  285          535          246         >19.7
w1                 664         1635           78         >19.0

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.298 in the direction of the burst
(Schlegel et al. 1998).