NOTE: uvot_fluxes_wget.pl vrs. 2018-01-16 fem at 180319d09h49m39s360768usUT
NOTE: Source region spec. is: 275.0920 +7.1871 3"
NOTE: Used archived uvot source position of 275.09200   7.18710  3.00
NOTE: position reference is GCN_Notice
NOTE: A UVOT position was reported in GCN_Notice_Mon_19_Mar_18_01:35:37_UT
NOTE: Possible detection in uu at T+300.5
NOTE: Possible detection in w1 at T+682.5
NOTE: Possible detection in vv at T+1039.1 sum
NOTE: Possible detection in w2 at T+606.4
NOTE: Possible detection in m2 at T+832.4 sum

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

GRB 180319: Swift/UVOT Upper Limits

A. A. Breeveld (UCL-MSSL) and ***BA*** (***BA INSTITUTION***)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 180319
88 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            88          238          147         >99.0
u_FC               300          550          246         >18.6
white               88         2219          470         >99.0
v                  632         2269          194         >18.0
b                  556         2195          175         >99.0
u                  300         2336          415         >19.4
w1                 682         2318          175         >17.2
m2                 657         2293          175         >16.4
w2                 606         2245          195         >17.0

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.23 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 180319: Swift/UVOT Detection

A. A. Breeveld (UCL-MSSL) and ***BA*** (***BA INSTITUTION***)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 180319
88 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               88         2219          470        >99.0
v                  632         1404           97         17.94 +/- 0.19
b                  556         2195          175        >99.0
u                  300          550          246         19.10 +/- 0.20
w1                 682         1453           78         17.41 +/- 0.18
m2                 657         1083           58         16.82 +/- 0.18
w2                 606         1035           58         17.22 +/- 0.19

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.23 in the direction of the burst
(Schlegel et al. 1998).