NOTE: uvot_fluxes_wget.pl vrs. 2018-11-07 fem at 190830d04h01m53s260384usUT
NOTE: Source region spec. is: 44.54404 -8.95794 4"
NOTE: Used archived XRT position of  44.54404  -8.95794  4.00
NOTE: position reference is GCN_Circulars-25552
NOTE: Possible detection in uu at T+264.3
NOTE: Possible detection in wh at T+106.4
NOTE: Possible detection in bb at T+696.3 sum
NOTE: Possible detection in w1 at T+1273.5 sum
NOTE: Possible detection in vv at T+771.3

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

GRB 190829A: Swift/UVOT Upper Limits

S. R. Oates (U.Warwick) and S. Dichiara (NASA/GSFC/UMCP)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 190829A
106 s after the BAT trigger (Dichiara et al., GCN Circ. 25552).
No optical afterglow consistent with the XRT position
(Dichiara et al. GCN Circ. 25552)
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         >19.4
u_FC               264          514          246         >19.2
white              106         1702          402         >17.9
v                  598         1589          117         >16.0
b                  521         1687          117         >17.5
u                  264         1663          362         >18.4
w1                 647         1638          117         >17.9

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.05 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 190829A: Swift/UVOT Detection

S. R. Oates (U.Warwick) and S. Dichiara (NASA/GSFC/UMCP)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 190829A
106 s after the BAT trigger (Dichiara et al., GCN Circ. 25552).
A source consistent with the XRT position
(Dichiara et al. GCN Circ. 25552)
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

white              106          256          147         19.82 +/- 0.15
v                 1050         1070           20         16.02 +/- 0.13
b                 1149         1169           19         17.30 +/- 0.14
u                 1124         1144           19         17.09 +/- 0.17
w1                 647         1465           97         18.48 +/- 0.26

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.05 in the direction of the burst
(Schlegel et al. 1998).