NOTE: uvot_fluxes_wget.pl vrs. 2018-11-07 fem at 200709d21h15m09s696702usUT
NOTE: Source region spec. is: 252.0755 15.0921 4"
NOTE: Used archived XRT position of 252.07550  15.09210  4.00
NOTE: position reference is GCN_Circulars-28072
NOTE: Possible detection in bb at T+46354.7
NOTE: Possible detection in w1 at T+51705.7
NOTE: Possible detection in vv at T+40454.5
NOTE: Possible detection in w2 at T+39546.9
NOTE: Possible detection in m2 at T+50798.9

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

GRB 200709B: 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 200709B
39547 s after the HAWC trigger (***Author*** et al., GCN Circ. ????).
No optical afterglow consistent with the XRT position
(Osborne et al. GCN Circ. 28072)
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 initial exposures are:

Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

v                40454        40915          449         >18.2
b                46355        46675          311         >18.9
w1               51706        52091          379         >18.0
m2               50799        51699          886         >18.1
w2               39547        40447          886         >18.2

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.067 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 200709B: 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 200709B
39547 s after the HAWC trigger (***Author*** et al., GCN Circ. ????).
A source consistent with the XRT position
(Osborne et al. GCN Circ. 28072)
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

v                40454        40754          295         18.64 +/- 0.15
b                46355        46654          295         19.22 +/- 0.10
w1               51706        52091          379         18.32 +/- 0.11
m2               50799        51699          886         18.35 +/- 0.09
w2               39547        40447          886         18.44 +/- 0.08

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.067 in the direction of the burst
(Schlegel et al. 1998).