SONG is an international initiative to design, build, and utilize a global network of eight 1-meter class
telescopes to be operated as a whole-Earth telescope. The telescope is composed of system of azimuth axis, rotating
table, fork, system of elevation axis, top-ring, up and down truss, system of primary mirror and so on. For an
astronomical telescope mount, having a high stiffness to support the mirror cell and instruments is its basic function.
Finite element method (FEM) is a powerful tool to help structure design engineer to achieve this goal. In this paper, with
the help of ANSYS, the static and modal analysis, calculation and optimization of the SONG telescope mount will be
given. The modal result which is used for avoiding resonance and fatigue failure of the telescope acquire natural
frequency of telescope. The FEM results show that the structure, designed for SONG telescope, is feasible and reliable
and have a high stiffness-to-weight ratio to meet the optical demands.