NOTE: uvot_fluxes_wget.pl vrs. 2023-03-23 fem at 240416d00h27m19s761569usUT
NOTE: Source region spec. is: 129.18858 73.14656 3"
NOTE: Used archived opt source position of 129.18858  73.14656  3.00
NOTE: position reference is GCN_Circulars-36118
NOTE: Possible detection in wh at T+3308.6
NOTE: Possible detection in uu at T+3467.1
NOTE: Possible detection in vv at T+4287.4

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

GRB 240415A: Swift/UVOT Upper Limits

***UBS*** (***INSTITUTION***) and M. J. Moss (GSFC)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 240415A
3309 s after the BAT trigger (Moss et al., GCN Circ. 36108).
No optical afterglow consistent with the optical position
*** POSITION REFERENCE is GCN_Circulars-36118 ***
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          3309         3458          147         >19.2
white             3309         4077          344         >19.4
v                 4287         4487          197         >18.3
b                 3672         3872          197         >19.2
u                 3467         5040          332         >18.5
w1                4698         4897          197         >19.3
m2                4492         4692          197         >19.1
w2                4083         4282          197         >19.5

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.022 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 240415A: Swift/UVOT Detection

***UBS*** (***INSTITUTION***) and M. J. Moss (GSFC)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 240415A
3309 s after the BAT trigger (Moss et al., GCN Circ. 36108).
A source consistent with the optical position
*** POSITION REFERENCE is GCN_Circulars-36118 ***
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             3877         4077          197         19.92 +/- 0.19
v                 4287         4487          197         18.95 +/- 0.28
b                 3672         3872          197        >19.2
u                 3467         5040          332         18.96 +/- 0.18
w1                4698         4897          197        >19.3
m2                4492         4692          197        >19.1
w2                4083         4282          197        >19.5

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.022 in the direction of the burst
(Schlegel et al. 1998).