NOTE: uvot_fluxes_wget.pl vrs. 2023-03-23 fem at 231117d13h25m48s082557usUT
NOTE: Source region spec. is: 332.38987 13.52256 4"
NOTE: Used archived XRT position of 332.38987  13.52256  4.00
NOTE: position reference is GCN_Circulars-35074
NOTE: Possible detection in wh at T+1174.2 sum

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

GRB 231117A: Swift/UVOT Upper Limits

***UBS*** (***INSTITUTION***) and S. L. Laha (GSFC/UMBC)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 231117A
106 s after the BAT trigger (Laha et al., GCN Circ. 35071).
No optical afterglow consistent with the XRT position
*** POSITION REFERENCE is GCN_Circulars-35074 ***
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         >20.8
u_FC               318          568          246         >19.7
white              106         1713          392         >20.6
v                  648         1418           78         >18.8
b                  574         1688           78         >19.3
u                  318          741          265         >19.9

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.071 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 231117A: Swift/UVOT Detection

***UBS*** (***INSTITUTION***) and S. L. Laha (GSFC/UMBC)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 231117A
106 s after the BAT trigger (Laha et al., GCN Circ. 35071).
A source consistent with the XRT position
*** POSITION REFERENCE is GCN_Circulars-35074 ***
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              106         1713          392         21.21 +/- 0.27
v                  648         1418           78        >18.8
b                  574         1688           78        >19.3
u                  318          741          265        >19.9

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.071 in the direction of the burst
(Schlegel et al. 1998).