Co-phasing of segmented mirrors using Dispersed Rayleigh Interferometry in the presence of background star

Shanshan Wang*, Qiudong Zhu, Tao Huang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publication5th International Symposium on Advanced Optical Manufacturing and Testing Technologies
Subtitle of host publicationLarge Mirrors and Telescopes
DOIs
Publication statusPublished - 2010
Externally publishedYes
Event5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes - Dalian, China
Duration: 26 Apr 201029 Apr 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7654
ISSN (Print)0277-786X

Conference

Conference5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Country/TerritoryChina
CityDalian
Period26/04/1029/04/10

Keywords

  • Background star
  • Co-phasing
  • Dispersed Rayleigh Interferometer
  • Segmented mirrors

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