Another way would be to make radial copies. I gave the scope a range of movement of 360° and made radial copies every 30°.
Then I copied all of those in the movement of the mount from -90° to +90°, also in 30° increments to get this shape.
Your axes should be set so that the mounting pole attached to the ground has the z-axis (blue) running up through it.
neq6-gmskp.skp (1.8 MB)