NOTE: uvot_fluxes_wget.pl vrs. 2023-03-23 fem at 231112d00h00m47s831206usUT
NOTE: Source region spec. is: 290.18848 52.43626 3"
NOTE: Used archived uvot source position of 290.18848  52.43626  3.00
NOTE: position reference is GCN_Circ_34981
NOTE: A UVOT position was reported in GCN_Circ_34981
NOTE: Possible detection in uu at T+164.6

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

GRB 231111A: Swift/UVOT Upper Limits

***UBS*** (***INSTITUTION***) and A. Melandri (INAF-OAR)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 231111A
165 s after the BAT trigger (Melandri et al., GCN Circ. 34981).
No optical afterglow consistent with the XRT position
*** POSITION REFERENCE is GCN_Circulars-34981 ***
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               165          402          234         >16.5
u                  165          402          234         >16.5

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.117 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 231111A: Swift/UVOT Detection

***UBS*** (***INSTITUTION***) and A. Melandri (INAF-OAR)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 231111A
165 s after the BAT trigger (Melandri et al., GCN Circ. 34981).
A source consistent with the XRT position
*** POSITION REFERENCE is GCN_Circulars-34981 ***
is detected in the initial UVOT exposures.

The preliminary UVOT position is:
    RA  (J2000) =  19:20:45.25 = 290.18856 (deg.)
    Dec (J2000) = +52:26:10.5  =  52.43624 (deg.)
with an estimated uncertainty of 0.43 arc sec. (radius, 90% confidence).

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                  165          402          234         16.65 +/- 0.04

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.117 in the direction of the burst
(Schlegel et al. 1998).