NOTE: uvot_fluxes_wget.pl vrs. 2024-08-27 fem at 251230d15h27m25s804112usUT
NOTE: Source region spec. is: 179.89756 11.43867 3"
NOTE: Used archived uvot source position of 179.89756  11.43867  3.00
NOTE: position reference is GCN_Circ_43271
NOTE: A UVOT position was reported in GCN_Circ_43271
NOTE: Possible detection in bb at T+544.7
NOTE: Possible detection in w1 at T+667.9
NOTE: Possible detection in w2 at T+1706.9 sum
NOTE: Possible detection in uu at T+288.4
NOTE: Possible detection in vv at T+618.7
NOTE: Possible detection in wh at T+76.4

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

GRB 251230A: Swift/UVOT Upper Limits

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

The Swift/UVOT began settled observations of the field of GRB 251230A
76 s after the BAT trigger (Lanava et al., GCN Circ. 43252).
No optical afterglow consistent with the XRT position
*** POSITION REFERENCE is GCN_Circulars-43263 ***
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            76          226          147         >13.5
u_FC               288          538          246         >13.7
white               76         1701          407         >15.0
v                  619         1751          136         >15.4
b                  545         1677          117         >15.6
u                  288         1652          343         >14.1
w1                 668         1800          136         >15.9
w2                1189         1727           39         >17.4

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.024 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 251230A: Swift/UVOT Detection

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

The Swift/UVOT began settled observations of the field of GRB 251230A
76 s after the BAT trigger (Lanava et al., GCN Circ. 43252).
A source consistent with the XRT position
*** POSITION REFERENCE is GCN_Circulars-43263 ***
is detected in the initial UVOT exposures.

The preliminary UVOT position is:
    RA  (J2000) =  11:59:35.41 = 179.89756 (deg.)
    Dec (J2000) = +11:26:19.2  =  11.43867 (deg.)
with an estimated uncertainty of 0.42 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

white               76          226          147         13.59 +/- 0.03
v                  619          638           19         14.63 +/- 0.07
b                  545          565           20         14.74 +/- 0.05
u                  288          538          246         13.76 +/- 0.02
w1                 668          688           19         15.30 +/- 0.11
w2                1189         1727           39         18.12 +/- 0.30

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.024 in the direction of the burst
(Schlegel et al. 1998).