</table>


<PRE>
</pre><h4><a name="Abstract">Abstract</a></h4><pre>

   CSPICE_ILLUMF computes the illumination angles---phase, incidence,
   and emission---at a specified point on a target body. Return logical
   flags indicating whether the surface point is visible from
   the observer's position and whether the surface point is
   illuminated.

   The target body's surface is represented using topographic data
   provided by DSK files, or by a reference ellipsoid.

   The illumination source is a specif