NOTE: uvot_fluxes_wget.pl vrs. 2020-11-03a fem at 221203d13h11m37s490224usUT
NOTE: Source region spec. is: 77.08300 -59.83247 4"
NOTE: Used archived XRT position of  77.08300 -59.83247  4.00
NOTE: position reference is GCN_Circulars-33008
NOTE: Possible detection in wh at T+101.5

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

GRB 221202A: Swift/UVOT Upper Limits

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

The Swift/UVOT began settled observations of the field of GRB 221202A
102 s after the BAT trigger (Caputo et al., GCN Circ. 33005).
No optical afterglow consistent with the XRT position
(Beardmore et al. GCN Circ. 33008)
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           102          251          147         >20.2
u_FC               260          510          246         >19.8
white              102          994          316         >20.4
v                  590         4820          216         >19.9
b                  516          709           39         >19.8
u                  260          857          285         >19.7
w1                 640          832           39         >20.8
m2                 615          808           39         >18.1
w2                 566         4635          235         >20.0

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.027 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 221202A: Swift/UVOT Detection

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

The Swift/UVOT began settled observations of the field of GRB 221202A
102 s after the BAT trigger (Caputo et al., GCN Circ. 33005).
A source consistent with the XRT position
(Beardmore et al. GCN Circ. 33008)
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              102          733          186         20.66 +/- 0.20
v                  590         4820          216        >19.9
b                  516          709           39        >19.8
u                  260          857          285        >19.7
w1                 640          832           39        >20.8
m2                 615          808           39        >18.1
w2                 566         4635          235        >20.0

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.027 in the direction of the burst
(Schlegel et al. 1998).