NOTE: uvot_fluxes_wget.pl vrs. 2018-01-16 fem at 180630d18h37m01s532181usUT
NOTE: Source region spec. is: 48.98342 -87.47844 3"
NOTE: Used archived uvot source position of  48.98342 -87.47844  3.00
NOTE: position reference is GCN_Circ_22872
NOTE: A UVOT position was reported in GCN_Circ_22872
NOTE: Possible detection in uu at T+299.6
NOTE: Possible detection in wh at T+87.6
NOTE: Possible detection in bb at T+554.9
NOTE: Possible detection in w1 at T+851.2 sum
NOTE: Possible detection in vv at T+802.1
NOTE: Possible detection in m2 at T+6987.2 sum

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

GRB 180630A: Swift/UVOT Upper Limits

S. J. LaPorte (PSU) 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 180630A
88 s after the BAT trigger (D'Avanzo et al., GCN Circ. 22872).
No optical afterglow consistent with the XRT position
(Beardmore et al. GCN Circ. 22873)
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          237          148         >17.4
u_FC               300          549          246         >17.6
white               88         6571          608         >18.4
v                  629         6982          510         >18.8
b                  555         6366          313         >19.3
u                  300         7462          603         >18.2
w1                 678         7392          510         >19.0
m2                 654         7187          452         >19.4
w2                 605         6777          255         >19.9

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.13 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 180630A: Swift/UVOT Detection

S. J. LaPorte (PSU) 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 180630A
88 s after the BAT trigger (D'Avanzo et al., GCN Circ. 22872).
A source consistent with the XRT position
(Beardmore et al. GCN Circ. 22873)
is detected in the initial UVOT exposures.

The preliminary UVOT position is:
    RA  (J2000) =  03:15:55.74 =  48.98224 (deg.)
    Dec (J2000) = -87:28:42.3  = -87.47842 (deg.)
with an estimated uncertainty of 0.43 arc sec. (radius, 90% confidence).

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          237          148         17.49 +/- 0.04
v                  629         1597          117         18.56 +/- 0.20
b                  555          748           39         18.76 +/- 0.19
u                  300          549          246         17.76 +/- 0.06
w1                 678         7392          510         19.42 +/- 0.17
m2                 654         7187          452         20.16 +/- 0.33
w2                 605         6777          255        >19.9

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.13 in the direction of the burst
(Schlegel et al. 1998).