NOTE: uvot_fluxes_wget.pl vrs. 2018-01-16 fem at 180314d06h48m19s800566usUT
NOTE: Source region spec. is: 99.26532 -24.49612 3"
NOTE: Used archived uvot source position of  99.26532 -24.49612  3.00
NOTE: position reference is GCN_Circ_22478
NOTE: A UVOT position was reported in GCN_Circ_22478
NOTE: Possible detection in uu at T+326.0
NOTE: Possible detection in wh at T+166.7
NOTE: Possible detection in bb at T+581.8
NOTE: Possible detection in w1 at T+1111.4 sum
NOTE: Possible detection in vv at T+656.0
NOTE: Possible detection in w2 at T+1558.3 sum
NOTE: Possible detection in m2 at T+1086.6 sum

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

GRB 180314A: Swift/UVOT Upper Limits

S. R. Oates (U.Warwick) and P. D'Avanzo (INAF-OAB)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 180314A
167 s after the BAT trigger (D'Avanzo et al., GCN Circ. 22478).
No optical afterglow consistent with the XRT position
(Osborne et al. GCN Circ. 22480)
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           167          316          147         >16.3
u_FC               326          576          246         >16.9
white              167         1553          392         >17.1
v                  656         1602          117         >17.6
b                  582         1701          117         >18.3
u                  326         1676          343         >17.1
w1                 705         1652           97         >17.7
m2                 680         1627          117         >17.7
w2                 632         1578          117         >18.4

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.08 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 180314A: Swift/UVOT Detection

S. R. Oates (U.Warwick) and P. D'Avanzo (INAF-OAB)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 180314A
167 s after the BAT trigger (D'Avanzo et al., GCN Circ. 22478).
A source consistent with the XRT position
(Osborne et al. GCN Circ. 22480)
is detected in the initial UVOT exposures.

The preliminary UVOT position is:
    RA  (J2000) =  06:37:03.68 =  99.26535 (deg.)
    Dec (J2000) = -24:29:46.0  = -24.49610 (deg.)
with an estimated uncertainty of 0.42 arc sec. (radius, 90% confidence).

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              167          316          147         16.31 +/- 0.03
v                  656          849           39         17.43 +/- 0.19
b                  755          774           19         17.93 +/- 0.19
u                  326          576          246         17.04 +/- 0.05
w1                 705         1652           97         18.23 +/- 0.20
m2                 680         1627          117         18.22 +/- 0.23
w2                 632         1578          117         19.15 +/- 0.31

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.08 in the direction of the burst
(Schlegel et al. 1998).