NOTE: uvot_fluxes_wget.pl vrs. 2020-11-03a fem at 230113d09h02m47s665480usUT
NOTE: Source region spec. is: 299.512 +35.075 3"
NOTE: Used archived BAT position of 299.51200  35.07500
NOTE: position reference is GCN_Position_Notice
WARNING: t_start for light curve (551) and t_start from the exposure report (570) do not agree.
  Replace ??? in draft Circular with correct value.

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

GRB 230113: 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 230113
***???*** 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           570          720          147         >20.2
white              570         1024          290         >20.6
w1                 752          772           19         >17.9
w2                 551          871           30         >18.4

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 2.099 in the direction of the burst
(Schlegel et al. 1998).