NOTE: uvot_fluxes_wget.pl vrs. 2018-01-16 fem at 180706d15h17m53s329135usUT
NOTE: Source region spec. is: 181.64308 66.03712 3"
NOTE: Used archived uvot source position of 181.64308  66.03712  3.00
NOTE: position reference is GCN_Circ_22909
NOTE: A UVOT position was reported in GCN_Circ_22909
NOTE: Possible detection in uu at T+307.5
NOTE: Possible detection in wh at T+95.3
NOTE: Possible detection in bb at T+1315.2 sum
NOTE: Possible detection in w1 at T+1439.3 sum

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

GRB 180706A: Swift/UVOT Upper Limits

S. R. Oates (U.Warwick) and M. Stamatikos (OSU/NASA/GSFC)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 180706A
95 s after the BAT trigger (Stamatikos et al., GCN Circ. 22909).
No optical afterglow consistent with the XRT position
(Osborne et al. GCN Circ. 22916)
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            95          245          147         >19.3
u_FC               308          557          246         >17.7
white               95         5695          589         >19.0
v                 1042         1582           58         >18.0
b                 1140         5490          255         >19.1
u                  308         1483          265         >17.7
w1                 686         1625           91         >18.1
w2                5701         5880          176         >19.9

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.02 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 180706A: Swift/UVOT Detection

S. R. Oates (U.Warwick) and M. Stamatikos (OSU/NASA/GSFC)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 180706A
95 s after the BAT trigger (Stamatikos et al., GCN Circ. 22909).
A source consistent with the XRT position
(Osborne et al. GCN Circ. 22916)
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              587          607           20         18.28 +/- 0.17
v                 1042         1582           58        >18.0
b                 1140         5490          255         19.61 +/- 0.20
u                  308          557          246         17.93 +/- 0.09
w1                 686         1625           91         18.79 +/- 0.31
w2                5701         5880          176        >19.9

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.02 in the direction of the burst
(Schlegel et al. 1998).