NOTE: uvot_fluxes_wget.pl vrs. 2018-11-07 fem at 191011d13h14m23s755310usUT
NOTE: Source region spec. is: 44.72832 -27.84541 3"
NOTE: Used archived uvot source position of  44.72832 -27.84541  3.00
NOTE: position reference is GCN_Circ_25988
NOTE: A UVOT position was reported in GCN_Circ_25988
NOTE: Possible detection in uu at T+5239.2 sum
NOTE: Possible detection in wh at T+77.9
NOTE: Possible detection in bb at T+1320.3 sum

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

GRB 191011A: Swift/UVOT Upper Limits

N. P. M. Kuin (UCL-MSSL) and Laha (GSFC/UMBC/CRESST)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 191011A
78 s after the BAT trigger (Laha et al., GCN Circ. 25988).
No optical afterglow consistent with the XRT position
(Evans et al. GCN Circ. 25995)
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            78          228          147         >19.8
u_FC               290          540          246         >19.8
white               78         7285          805         >20.2
v                  620        11672         1211         >20.2
b                  545         7080          510         >20.4
u                  290         6875          697         >20.2
w1                 670         6670          510         >20.3
m2                1073        12198          767         >21.1
w2                1024         7491          432         >20.9

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.02 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 191011A: Swift/UVOT Detection

N. P. M. Kuin (UCL-MSSL) and Laha (GSFC/UMBC/CRESST)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 191011A
78 s after the BAT trigger (Laha et al., GCN Circ. 25988).
A source consistent with the XRT position
(Evans et al. GCN Circ. 25995)
is detected in the initial UVOT exposures.

The preliminary UVOT position is:
    RA  (J2000) =  02:58:54.79 =  44.72829 (deg.)
    Dec (J2000) = -27:50:43.4  = -27.84540 (deg.)
with an estimated uncertainty of 0.73 arc sec. (radius, 90% confidence).

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               78          228          147         20.27 +/- 0.16
v                  620        11672         1211        >20.2
b                  545         7080          510         21.03 +/- 0.27
u                  290         6875          697         20.86 +/- 0.27
w1                 670         6670          510        >20.3
m2                1073        12198          767        >21.1
w2                1024         7491          432        >20.9

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.02 in the direction of the burst
(Schlegel et al. 1998).