NOTE: uvot_fluxes_wget.pl vrs. 2020-11-03a fem at 220528d13h02m15s900601usUT
NOTE: Source region spec. is: 244.9768 -15.6424 4"
NOTE: Used archived XRT position of 244.97680 -15.64240  4.00
NOTE: position reference is GCN_Notice
NOTE: Possible detection in uu at T+719.1

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

GRB 220527: Swift/UVOT Upper Limits

S. J. LaPorte (PSU) and ***BA*** (***BA INSTITUTION***)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 220527
490 s after the BAT trigger (***Author*** et al., GCN Circ. ????).
No optical afterglow consistent with the XRT position
*** POSITION REFERENCE is GCN_Notice ***
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           513          663          147         >21.0
white              513          788          167         >21.1
v                  490          825           21         >17.7
b                  744          763           19         >17.9
u                  719          739           19         >16.9
w1                 695          714           19         >17.2

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.344 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 220527: Swift/UVOT Detection

S. J. LaPorte (PSU) and ***BA*** (***BA INSTITUTION***)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 220527
490 s after the BAT trigger (***Author*** et al., GCN Circ. ????).
A source consistent with the XRT position
*** POSITION REFERENCE is GCN_Notice ***
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              513          788          167        >21.1
v                  490          825           21        >17.7
b                  744          763           19        >17.9
u                  719          739           19         17.55 +/- 0.25
w1                 695          714           19        >17.2

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.344 in the direction of the burst
(Schlegel et al. 1998).