UV_CIRCLE

        [ADVANCED\]UV_CIRCLE [x0 y0 Rota Incli]
      [/SAMPLING QSTEP [Unit [QMIN QMAX]]] [/ZERO [Flux]]

    Compute a UV table containing the radial distribution of the azimutal  aver-
    age  of  the visibilities after deprojection for inclination and orientation
    (Incli, Rota, in Degrees) around a specified center (x0,y0  in Radians). All
    arguments default to 0.  ROTA is here the position angle  of  axis  of  (as-
    sumed)  rotational  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  resulting  UV table have visibilities only with V values equal to 0, so
    that the U values contain the radial distance in the UV plane.  This is con-
    venient to display the azimutal average of the visibilities as a function of
    UV distance, but cannot be used for further imaging.

    See UV_RADIAL if you want to image the circular average  of  the  brightness
    distribution.