NOTE: uvot_fluxes_wget.pl vrs. 2024-08-27 fem at 260118d15h26m11s468316usUT
NOTE: Source region spec. is: 170.2386 -61.9161 4"
NOTE: Used archived XRT position of 170.23860 -61.91610  4.00
NOTE: position reference is GCN_Notice
NOTE: Possible detection in uu at T+189.0
WARNING: t_start for light curve (189) and t_start from the exposure report (107) do not agree.
  Replace ??? in draft Circular with correct value.

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

GRB 260118: 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 260118
***???*** s after the BAT trigger (***Author*** et al., GCN Circ. ????).
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

u_FC               189          439          246         >12.7
u                  189         1024          393         >12.7

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 3.080 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 260118: Swift/UVOT Detection

***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 260118
***???*** s after the BAT trigger (***Author*** et al., GCN Circ. ????).
A source consistent with the XRT position
*** POSITION REFERENCE is GCN_Notice ***
is detected in the initial UVOT exposures.

Preliminary detections 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

u                  189          439          246         12.72 +/- 0.02

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 3.080 in the direction of the burst
(Schlegel et al. 1998).