NOTE: uvot_fluxes_wget.pl vrs. 2018-11-07 fem at 190128d17h53m24s525645usUT
NOTE: Source region spec. is: 207.0534 -63.2745 3"
NOTE: Used archived uvot source position of 207.05340 -63.27450  3.00
NOTE: position reference is GCN_Notice
NOTE: A UVOT position was reported in GCN_Notice_Mon_28_Jan_19_15:14:59_UT
NOTE: Possible detection in uu at T+5214.8
NOTE: Possible detection in wh at T+143.9
NOTE: Possible detection in bb at T+5420.3
NOTE: Possible detection in w1 at T+5009.9
NOTE: Possible detection in vv at T+4599.5
NOTE: Possible detection in w2 at T+5831.2
WARNING: t_start for light curve (144) and t_start from the exposure report (4443) do not agree.
  Replace ??? in draft Circular with correct value.

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

GRB 190128: Swift/UVOT Upper Limits

***UBS*** (***INSTITUTION***) and ***BA*** (***BA INSTITUTION***)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 190128
***???*** s after the BAT trigger (***Author*** et al., GCN Circ. ????).
No optical afterglow consistent with the XRT position
*** POSITION REFERENCE is GCN_Circ-23801 ***
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

white              144         5825          349         >16.8
v                 4600         6236          393         >15.9
b                 5420         5620          197         >16.9
u                 5215         5415          197         >16.7
w1                5010         5210          197         >17.4
m2                4805         6269          224         >18.6
w2                5831         6031          197         >18.3

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 4.43 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 190128: Swift/UVOT Detection

***UBS*** (***INSTITUTION***) and ***BA*** (***BA INSTITUTION***)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 190128
***???*** s after the BAT trigger (***Author*** et al., GCN Circ. ????).
A source consistent with the XRT position
*** POSITION REFERENCE is GCN_Circ-23801 ***
is detected in the initial UVOT exposures.

The preliminary UVOT position is:
    RA  (J2000) =  13:48:12.77 = 207.05321 (deg.)
    Dec (J2000) = -63:16:28.2  = -63.27451 (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              144          149            5         16.70 +/- 0.12
v                 4600         4799          197         15.99 +/- 0.04
b                 5420         5620          197         17.03 +/- 0.04
u                 5215         5415          197         16.82 +/- 0.05
w1                5010         5210          197         17.75 +/- 0.12
m2                4805         6269          224        >18.6
w2                5831         6031          197         18.97 +/- 0.28

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 4.43 in the direction of the burst
(Schlegel et al. 1998).