\psset{linewidth=0.4\pslinewidth,PointSymbol=x,%
       nodesep=0,linecolor=magenta}
\pstGeonode[PointName=none]{O}(2,0){O'}
\pstCircleOA[linecolor=black]{O}{O'}
\multido{\n=5+5}{72}{%
  \pstGeonode[PointSymbol=none, PointName=none]
     (2;\n){M_\n}
  \pstCircleOA{M_\n}{O'}} 