 Convert the intersection point of the boresight
                 vector and Mars from rectangular into latitudinal
                 coordinates. Convert radians to degrees.
                 ./
                 <a href="reclat_c.html">reclat_c</a> ( spoint, &amp;radius, &amp;lon, &amp;lat );

                 lon *= <a href="dpr_c.html">dpr_c</a>();
                 lat *= <a href="dpr_c.html">dpr_c</a>();

                 printf( &quot;Boresight surface intercept coordinates:\n&quot;
                     