Design and analysis of large spaceborne light-weighted primary mirror and its support system

Details Design and analysis of large spaceborne light-weighted primary mirror and its support system Design and analysis of large spaceborne light-weighted primary mirror and its support system

Nov 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007spie.6721e..31y&link_type=abstract

3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes. Edited by

Physics

Scientific paper

With the development of the resolution of spaceborne remote sensor, the diameter of the primary mirror of spaceborne telescope becomes larger and larger. The distortion of primary mirror which is influenced by the mirror material, structure, self-weight, support system and temperature environment affects optical image quality finally. In this paper, an on-axis TMA high-resolution Cassegrain optical payload with a primary mirror whose diameter is φ 650mm was designed and the effects of the influence factors of the distortion acts on the on-axis TMA optical system primary mirror had been analyzed by means of Finite Element Analysis. During work, the technology of the primary mirror design had been summarized and general consideration of the primary mirror design technology also had been described at the same time. Considering the telescope manufacture and work station, a reasonable and optimal structure of the primary mirror sub-assembly is taken finally. In the end, the distortion of the primary mirror during its fabrication station and work station had been analyzed by integrated Finite Element Analysis Method. The results implicated the synthesis profile error (P-V value) for the primary mirror is less than λ/10 and all the indexes of the primary mirror satisfy the requirements of the optical system.

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