Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Analytic diffraction analysis of a 32-m telescope with hexagonal segments for high-contrast imaging

Not Accessible

Your library or personal account may give you access

Abstract

Large segmented telescopes cannot be modeled accurately with fast-Fourier-transform techniques since small features such as gaps between the segments will be inadequately sampled. An analytic Fourier-transform method can be used to model any pupil configuration with straight edges, including tolerance analysis and some types of apodization. We analytically investigated a 32-m segmented primary with 18 hexagonal segments for high-contrast imaging. There are significant regions in the image in which extrasolar planets could be detected. However, the hexagonal profile of the pupil was not as useful as expected. The gaps between the segments, the secondary obscuration, and the secondary spiders must be as small as possible and their edges must be apodized. Apodizing the edges of the individual segments reduced the useful regions in the image since the gaps appeared to be wider.

© 2005 Optical Society of America

Full Article  |  PDF Article
More Like This
Diffraction effects from giant segmented-mirror telescopes

Mitchell Troy and Gary Chanan
Appl. Opt. 42(19) 3745-3753 (2003)

Analytical study of diffraction effects in extremely large segmented telescopes

Natalia Yaitskova, Kjetil Dohlen, and Philippe Dierickx
J. Opt. Soc. Am. A 20(8) 1563-1575 (2003)

Analysis of stellar interferometers as wave-front sensors

François Hénault
Appl. Opt. 44(22) 4733-4744 (2005)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (11)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved