NOTE: uvot_fluxes_wget.pl vrs. 2016-02-01 fem at 160927d01h29m19s047223usUT
NOTE: Used archived opt source position of 337.07425 -14.94906  3.00
NOTE: position reference is GCN_Circ-19939
NOTE: Possible detection in uu at T+122890.5
NOTE: Possible detection in bb at T+122974.9
NOTE: Possible detection in w1 at T+122724.3
NOTE: Possible detection in vv at T+123385.0
NOTE: Possible detection in w2 at T+123060.1
NOTE: Possible detection in m2 at T+123468.8

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

GRB 160925A: Swift/UVOT Upper Limits

M. H. Siegel (PSU) reports on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 160925A
122724 s after the GBM(instrument trigger (***Author*** et al., GCN Circ. ????).
No optical afterglow consistent with the optical position
*** POSITION REFERENCE is GCN_Circ-19939 ***
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               123385       129946          151         >15.8
b               122975       129536          205         >15.7
u               122890       129457          236         >14.4
w1              122724       129373          472         >13.7
m2              123469       129981          783         >13.5
w2              123060       129862          625         >13.4

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.031 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 160925A: Swift/UVOT Detection

M. H. Siegel (PSU) reports on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 160925A
122724 s after the GBM(instrument trigger (***Author*** et al., GCN Circ. ????).
A source consistent with the optical position
*** POSITION REFERENCE is GCN_Circ-19939 ***
is detected in the initial UVOT exposures.

The preliminary UVOT position is:
    RA  (J2000) =  22:28:17.86 = 337.07441 (deg.)
    Dec (J2000) = -14:56:57.0  = -14.94916 (deg.)
with an estimated uncertainty of 0.43 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

v               123385       123464           78         15.96 +/- 0.06
b               122975       123055           78         15.75 +/- 0.04
u               122890       122970           78         14.47 +/- 0.03
w1              122724       122884          157         13.69 +/- 0.03
m2              123469       124240          758         13.53 +/- 0.02
w2              123060       123380          315         13.36 +/- 0.02

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.031 in the direction of the burst
(Schlegel et al. 1998).