Edge effects on the diffraction of the segmented aperture

Bi Ru Wang*, Ji Xiang Yan, Xiao Fang Zhang, Yuan Shen Gu

*Corresponding author for this work

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

Abstract

At present, the large telescopes use segmented primary mirror. Segmentation and edge effects are closely related to system image quality. Generally there are four kinds of edge effects including gaps between segments, turned down/up segment edges, piston and random tip-tilt errors. This paper concentrates on a primary mirror structure with a central octagonal segment and eight marginal approximately annular-sector segments. We will give a Strehl Ratio formula that contains edge effect parameters. In addition, both the derivation and simulation are based on the assumption that edge effects exist uniquely.

Original languageEnglish
Title of host publicationInternational Symposium on Photoelectronic Detection and Imaging 2007
Subtitle of host publicationRelated Technologies and Applications
DOIs
Publication statusPublished - 2008
EventInternational Symposium on Photoelectronic Detection and Imaging, ISPDI 2007: Related Technologies and Applications - Beijing, China
Duration: 9 Sept 200712 Sept 2007

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6625
ISSN (Print)0277-786X

Conference

ConferenceInternational Symposium on Photoelectronic Detection and Imaging, ISPDI 2007: Related Technologies and Applications
Country/TerritoryChina
CityBeijing
Period9/09/0712/09/07

Keywords

  • Numerical modeling
  • Point Spread Function (SPF)
  • Segmented primary mirror
  • Strehl Ratio (SR)
  • Telescope

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