NOTE: uvot_fluxes_wget.pl vrs. 2020-11-03a fem at 230117d08h59m59s239753usUT
NOTE: Source region spec. is: 98.61721 49.87239 4"
NOTE: Used archived XRT position of  98.61721  49.87239  4.00
NOTE: position reference is GCN_Circulars-33180
WARNING: t_start for light curve (114) and t_start from the exposure report (134) do not agree.
  Replace ??? in draft Circular with correct value.

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

GRB 230116D: Swift/UVOT Upper Limits

***UBS*** (***INSTITUTION***) and E. Sonbas (Adiyaman Univ.)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 230116D
***???*** s after the BAT trigger (Sonbas et al., GCN Circ. 33176).
No optical afterglow consistent with the XRT position
(Osborne et al. GCN Circ. 33180)
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           134          283          147         >20.4
u_FC               292          541          246         >20.3
white              134         1367          373         >20.8
v                  114         1417          109         >19.0
b                  547         1342           74         >19.7
u                  292         5027          339         >20.4
w1                 670         4986          274         >19.9
m2                 646         1268           58         >18.9
w2                 597         1392           97         >19.5

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.112 in the direction of the burst
(Schlegel et al. 1998).