NOTE: uvot_fluxes_wget.pl vrs. 2023-03-23 fem at 231211d07h36m59s446198usUT
NOTE: Source region spec. is: 95.79471 -48.37228 4"
NOTE: Used archived XRT position of  95.79471 -48.37228  4.00
NOTE: position reference is GCN_Circulars-35318
NOTE: Possible detection in vv at T+792.9 sum
NOTE: Possible detection in wh at T+462.5

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

GRB 231210B: Swift/UVOT Upper Limits

M. H. Siegel (PSU) and K. L. Page (U. Leicester)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 231210B
462 s after the BAT trigger (Page et al., GCN Circ. 35314).
No optical afterglow consistent with the XRT position
*** POSITION REFERENCE is GCN_Circulars-35318 ***
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           462          612          147         >19.5
white              462         1885          412         >20.0
v                  619         1935          156         >18.5
b                  718         2020          123         >19.5
u                  692         2008          136         >19.9
w1                 668         1984          156         >21.1
m2                 818         1959           97         >19.2
w2                 768         1910          117         >20.4

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.058 in the direction of the burst
(Schlegel et al. 1998).


=========== Draft Detection Circular ========

GRB 231210B: Swift/UVOT Detection

M. H. Siegel (PSU) and K. L. Page (U. Leicester)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 231210B
462 s after the BAT trigger (Page et al., GCN Circ. 35314).
A source consistent with the XRT position
*** POSITION REFERENCE is GCN_Circulars-35318 ***
is detected in the initial UVOT exposures.

Preliminary detections and 3-sigma upper limits using the UVOT photometric system
(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are: 

Filter         T_start(s)   T_stop(s)      Exp(s)           Mag

white              462          612          147         19.82 +/- 0.13
v                  619         1935          156         19.10 +/- 0.27
b                  718         2020          123        >19.5
u                  692         2008          136        >19.9
w1                 668         1984          156        >21.1
m2                 818         1959           97        >19.2
w2                 768         1910          117        >20.4

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.058 in the direction of the burst
(Schlegel et al. 1998).