Share Email Print
cover

Proceedings Paper

Study of the impact of petal-shape mirror segmentation on 2 m segmented telescope
Author(s): Cundong Lei; Liehua Zheng; Ying Che
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The final optical design for a 2m infrared telescope with segmented primary mirror is presented in this paper, in response to the “2m segmented infrared telescope” proposal by Shanghai Institute of Technical Physics, Chinese Academy of Sciences for researching on the next generation of astro-physical mission. The segmented primary mirror adopts a circular center mirror and 8 petal-shape segment mirrors. To investigate the effects of intersegment gaps, position and figure errors of segments, a wavefront aberration representation is derived through aspheric surface equation, then, the linear relation between wavefront aberration and interference bright fringe is established, therefore, a linear retrieval algorithm of stitching tolerances base on the tolerances sensitivity matrix is proposed. In order to verify the algorithm, a simulation program is developed to analyze the fringe Zernike coefficients data of ZEMAX ray tracing, and the simulation results show that the maximum retrieval deviation is in the range of ±0.5%.

Paper Details

Date Published: 5 August 2015
PDF: 8 pages
Proc. SPIE 9618, 2015 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 96180R (5 August 2015); doi: 10.1117/12.2192827
Show Author Affiliations
Cundong Lei, Shanghai Institute of Technical Physics (China)
Changchun Univ. of Science and Technology (China)
Liehua Zheng, Shanghai Institute of Technical Physics (China)
Ying Che, Changchun Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 9618:
2015 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments
Yongtian Wang; Xiaodi Tan; Kimio Tatsuno, Editor(s)

© SPIE. Terms of Use
Back to Top