Secondary mirror supporting structure for 1.2 m telescope

Hong-chao, 赵宏超 Zhao; Jing-xu, 张景旭 Zhang; Fei, 杨飞 Yang; Qichang, 安其昌 An

doi:10.3788/ope.20172510.2614

Cited by 2 publications

(1 citation statement)

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“…The structural design of large telescopes often uses a single or multi-layer truss structure as the main support structure. The main structure integrates with welded ring beams, and quadruple wing beam structures support the secondary mirror chamber, as shown in Figure 3 [15]. Suppose the secondary mirror truss is integrated with the SMAM.…”

Section: Design Of Dynamic Secondary Mirror Truss Adjustment Mechanismmentioning

confidence: 99%

Design of a Dynamic Secondary Mirror Truss Adjustment Mechanism for Large Aperture Telescopes

Wang

Zhang

2023

Applied Sciences

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This study focuses on the dynamic secondary mirror truss adjustment mechanism for large aperture telescopes. The relative positions between the primary and secondary mirrors have stringent requirements for large aperture optical telescopes, with an aperture of more than 2 m. Due to the large mass of the primary mirror, the secondary mirror system is designed as an adjustable mechanism with multiple degrees of freedom, dramatically impacting telescope imaging. The kinematic modeling is followed by a detailed description of the designed adjustment mechanism, and then a static and modal analysis of the designed mechanism is performed. Subsequently, a kinematic performance test of the experimental prototype is conducted. The developed mechanism can travel up to ±5 mm in the z-direction with an accuracy of 16 µm and deflection of ±0.574° in the xy-direction. It provides accuracy better than 6.4 arcseconds.

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Section: Design Of Dynamic Secondary Mirror Truss Adjustment Mechanismmentioning

confidence: 99%