[ADVANCED\]UV_RADIAL x0 y0 Rota Incli [/SAMPLING QSTEP [QMIN QMAX]]
[/ZERO [Flux]]
Compute a UV table containing the radial distribution of the azimutal
average of the visibilities after deprojection for inclination and ori-
entation (Incli, Rota, in Degrees) around a specified center (x0,y0 in
Radians). ROTA is here the position angle of axis of (assumed) rota-
tional invariance of the object. Thus, when using results from UV_FIT
one should use ROTA = PA-90, where PA is the Position Angle of the Major
axis.
The result becomes the current UV table. The resulting UV table has a
(u,v) coverage which is extended by rotation, so that it can be used to
image the (rotationally symmetric) 2-D radial distribution using stan-
dard commands like UV_MAP and CLEAN. The radial profile of the bright-
ness distribution can then be recovered by using any radial cut through
this image.
Note, however, that in a SHOW UV command with "radius" along one axis,
all visibilities at different azimut are superimposed. See UV_CIRCLE for
a different way of computing an azimutal average, more suited for SHOW
UV.
Subsections
Gildas manager
2023-06-01