NOTE: uvot_fluxes_wget.pl vrs. 2023-03-23 fem at 231129d19h45m45s956315usUT
NOTE: Source region spec. is: 317.5456 +41.5206 4"
NOTE: Used archived XRT position of 317.54560  41.52060  4.00
NOTE: position reference is GCN_Notice
NOTE: Possible detection in wh at T+120.3

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

GRB 231129A: Swift/UVOT Upper Limits

***UBS*** (***INSTITUTION***) and J. D. Gropp (PSU)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 231129A
120 s after the BAT trigger (Gropp et al., GCN Circ. 35208).
No optical afterglow consistent with the XRT position
*** POSITION REFERENCE is GCN_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           120          270          147         >19.9
white              120         4158          344         >20.1
v                 4369         4568          197         >18.4
b                 3753         3953          197         >19.3
u                  333         5122          275         >20.1
w1                4780         4980          197         >19.3
m2                4574         4773          197         >20.0
w2                4164         4364          197         >19.2

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 1.164 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 231129A: Swift/UVOT Detection

***UBS*** (***INSTITUTION***) and J. D. Gropp (PSU)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 231129A
120 s after the BAT trigger (Gropp et al., GCN Circ. 35208).
A source consistent with the XRT position
*** POSITION REFERENCE is GCN_Notice ***
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              120          270          147         20.57 +/- 0.29
v                 4369         4568          197        >18.4
b                 3753         3953          197        >19.3
u                  333         5122          275        >20.1
w1                4780         4980          197        >19.3
m2                4574         4773          197        >20.0
w2                4164         4364          197        >19.2

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 1.164 in the direction of the burst
(Schlegel et al. 1998).