Design of high resolution tip/tilt mirror for multi-mirror ground-based telescope

Sun Pengfei; Chen Junjie; Zhang Yong; Li Baoqing; Chu Jiaru

doi:10.11884/HPLPB201830.180026

Volume 30 Issue 7

Jul. 2018

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Article Navigation > High Power Laser and Particle Beams > 2018 > 30(7): 074102

Sun Pengfei, Chen Junjie, Zhang Yong, et al. Design of high resolution tip/tilt mirror for multi-mirror ground-based telescope[J]. High Power Laser and Particle Beams, 2018, 30: 074102. doi: 10.11884/HPLPB201830.180026

Citation:

Sun Pengfei, Chen Junjie, Zhang Yong, et al. Design of high resolution tip/tilt mirror for multi-mirror ground-based telescope[J]. High Power Laser and Particle Beams, 2018, 30: 074102. doi: 10.11884/HPLPB201830.180026

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Design of high resolution tip/tilt mirror for multi-mirror ground-based telescope

doi: 10.11884/HPLPB201830.180026

Sun Pengfei^1
,,
Chen Junjie¹,
Zhang Yong^{2, 3},
Li Baoqing^{1
,
,},
Chu Jiaru¹

1.
Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China
2.
Key Laboratory of Astronomical Optics & Technology, National Astronomical Observatories, Chinese Academy of Sciences, Nanjing 210042, China
3.
Nanjing Institute of Astronomical Optics & Technology, Chinese Academy of Sciences, Nanjing 210042, China

Received Date: 2018-01-22
Rev Recd Date: 2018-03-09
Publish Date: 2018-07-15

Abstract

Abstract

To meet the requirements of co-phase diffraction limit imaging, a high resolution tip/tilt mirror(TM) for multi-mirror ground-based telescope is proposed and designed. Three dumbbell-shaped flexible hinges and rhombus attenuated displacement structures (RADSs) were used in the TM system as the moving transmission devices, and three piezoelectric stack actuators (PSAs) were applied as driving components. The structure parameters of the flexible hinges and RADSs were optimized by theoretical, experimental and simulative methods. The experimental results show that the TM has an extreme high angular resolution of 0.017″, and the mechanical excursion angle is larger than 0.24′ with a natural frequency of 136.97 Hz, which accord well with the results of the theoretical estimation and finite element analyzing (FEA) simulation. The high angular resolution property indicates the multi-mirror telescope can achieve the imaging in diffraction limit.
- tip/tilt mirror,
- high angular resolution,
- piezoelectric stack actuator,
- ground-based telescope,
- flexible hinge

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References(22)

References

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