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Proceedings Paper

Co-phasing of segmented mirrors using Dispersed Rayleigh Interferometry in the presence of background star
Author(s): Shanshan Wang; Qiudong Zhu; Tao Huang
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Paper Abstract

Dispersed Rayleigh Interferometry has been verified a potential way to co-phasing segmented mirror in orbit using natural star as beacon. Measurement error caused by background star around beacon is analyzed under specific system parameters, and tolerances of magnitude difference in two orthogonal directions are also presented. To achieve 10nm / 20nm accuracy, minimum magnitude difference of background star and beacon star is about 2.5M / 1.7M. Furthermore, it is proved by calculating more than 6000 positions of background star distributed in an area about twice larger than the Airy disk in diameter.

Paper Details

Date Published: 13 October 2010
PDF: 6 pages
Proc. SPIE 7654, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 76540X (13 October 2010); doi: 10.1117/12.867108
Show Author Affiliations
Shanshan Wang, Beijing Insititute of Technology (China)
Qiudong Zhu, Beijing Insititute of Technology (China)
Tao Huang, Beijing Insititute of Technology (China)


Published in SPIE Proceedings Vol. 7654:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Wenhan Jiang; Myung K. Cho; Fan Wu, Editor(s)

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