Function inSkyEllipse( lon0, lat0, lonCenter, latCenter, rA, rB, posAng )

Description:
Tests whether a given sky position is inside a given ellipse.
Parameters:
lon0 (floating point)
test point longitude in degrees
lat0 (floating point)
test point latitude in degrees
lonCenter (floating point)
ellipse center longitude in degrees
latCenter (floating point)
ellipse center latitude in degrees
rA (floating point)
ellipse first principal radius in degrees
rB (floating point)
ellipse second principal radius in degrees
posAng (floating point)
position angle in degrees from the North pole to the primary axis of the ellipse in the direction of increasing longitude
Return Value (boolean):
true iff test point is inside, or on the border of, the ellipse
Signature:
boolean inSkyEllipse(double, double, double, double, double, double, double)