NOTE: uvot_fluxes_wget.pl vrs. 2017-12-12 fem at 180111d22h42m56s967034usUT
NOTE: Source region spec. is: 149.77975 48.26769 4"
NOTE: Used archived XRT position of 149.77975  48.26769  4.00
NOTE: position reference is GCN_Circulars-22319
NOTE: Possible detection in uu at T+309.9
NOTE: Possible detection in wh at T+97.7
NOTE: Possible detection in bb at T+4379.5
NOTE: Possible detection in w1 at T+3969.5
NOTE: Possible detection in vv at T+4995.0
NOTE: Possible detection in w2 at T+4790.1
NOTE: Possible detection in m2 at T+5199.8

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

GRB 180111A: Swift/UVOT Upper Limits

J. D. Gropp (PSU) and A. Y. Lien (GSFC/UMBC)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 180111A
98 s after the BAT trigger (Lien et al., GCN Circ. 22318).
No optical afterglow consistent with the XRT position
(Evans et al. GCN Circ. 22319)
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            98          247          147         >18.5
u_FC               310          560          246         >18.0
white               98         6216          555         >18.8
v                 4995         5195          197         >17.9
b                 4380         6017          393         >18.7
u                  310         5809          639         >18.4
w1                3970         5605          393         >18.7
m2                5200         5400          197         >18.5
w2                4790         6421          393         >18.8

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.01 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 180111A: Swift/UVOT Detection

J. D. Gropp (PSU) and A. Y. Lien (GSFC/UMBC)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 180111A
98 s after the BAT trigger (Lien et al., GCN Circ. 22318).
A source consistent with the XRT position
(Evans et al. GCN Circ. 22319)
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

white               98          247          147         18.71 +/- 0.07
v                 4995         5195          197         18.36 +/- 0.18
b                 4380         4579          197         18.80 +/- 0.11
u                  310          560          246         18.38 +/- 0.13
w1                3970         5605          393         19.21 +/- 0.19
m2                5200         5400          197         19.15 +/- 0.28
w2                4790         6421          393         19.26 +/- 0.20

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.01 in the direction of the burst
(Schlegel et al. 1998).