NOTE: uvot_fluxes_wget.pl vrs. 2018-11-07 fem at 200914d22h38m27s916061usUT
NOTE: Source region spec. is: 254.5120 -36.2914 3"
NOTE: Used archived BAT position of 254.51200 -36.29140
NOTE: position reference is GCN_FOM_Notice

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

GRB 200914: 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 200914
8965 s after the INTEGRAL trigger (***Author*** et al., GCN Circ. ????).
No optical afterglow consistent with the INTEGRAL position
*** POSITION REFERENCE is GCN_FOM_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 initial exposures are:

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

v                 9623         9703           79         >18.0
b                 9213         9293           79         >19.0
u                 9129         9209           79         >18.5
w1                8965         9125          157         >18.6
m2                9707        10161          447         >19.4
w2                9299         9619          315         >19.1

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.98 in the direction of the burst
(Schlegel et al. 1998).