Design and Optimization of Truss Tube Based on Giant Telescope
Abstract
Because of large caliber and small focus ratio, the giant telescope has higher positional precision and dynamics requirements in the design of the telescope tube, compared with large, medium, and small telescopes. In order to design the telescope tube which meets the above requirements and ensure the image quality of the telescope, the cage tube and the quadripod structure are designed according to the particularity of the giant telescope. By comparing and evaluating, the optimal scheme is determined and optimized. After analysis and optimization, the maximum relative axial displacement of the primary and secondary mirrors is 1.61 mm, the maximum relative radial displacement is 4.58 mm, the maximum relative deflection angle is 1.29', and the natural frequency is 4.21 Hz, which meets the design requirements. Steel quadripod tube of giant telescope which meets the requirements, for the first time, is designed in this paper, which provides a technical reserve for the work of the giant telescope or telescope with small focus ratio.
- Publication:
-
Acta Astronomica Sinica
- Pub Date:
- November 2018
- Bibcode:
- 2018AcASn..59...52X
- Keywords:
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- telescopes;
- instrumentation: adaptive optics;
- methods: analytical;
- methods: data analysis