NOTE: uvot_fluxes_wget.pl vrs. 2018-11-07 fem at 190226d21h34m34s143140usUT
NOTE: Source region spec. is: 247.8173 -47.8066 4"
NOTE: Used archived XRT position of 247.81730 -47.80660  4.00
NOTE: position reference is GCN_Notice
NOTE: Possible detection in wh at T+515.3

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

GRB 190226: 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 190226
515 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

white_FC           515          665          147         >19.6
white              515         2062          431         >20.0
v                  820         2456          193         >18.1
b                  746         2382          175         >19.0
u                  721         2530          194         >19.4
w1                 697         2506          194         >19.2
m2                 672         2481          214         >20.0
w2                 796         2432          195         >19.4

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 12.82 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 190226: 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 190226
515 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 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              515         1888          411         20.49 +/- 0.22
v                  820         2456          193        >18.1
b                  746         2382          175        >19.0
u                  721         2530          194        >19.4
w1                 697         2506          194        >19.2
m2                 672         2481          214        >20.0
w2                 796         2432          195        >19.4

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 12.82 in the direction of the burst
(Schlegel et al. 1998).