             rotation 
           
                  [W] [pi/2 - Dec] [RA + pi/2] 
                     3            1           3 
                ./


                <a href="rotate_c.html">rotate_c</a> (        ra + <b>halfpi_c</b>(), 3, tipm );
                <a href="rotmat_c.html">rotmat_c</a> ( tipm, <b>halfpi_c</b>() - dec, 1, tipm );
                <a href="rotmat_c.html">rotmat_c</a> ( tipm, w,                3, tipm );
 
               } 
 </PRE>
<h4><a name="Restrictions">Restrictions</a></h4