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Applied Optics

Applied Optics


  • Vol. 42, Iss. 19 — Jul. 1, 2003
  • pp: 3745–3753

Diffraction effects from giant segmented-mirror telescopes

Mitchell Troy and Gary Chanan  »View Author Affiliations

Applied Optics, Vol. 42, Issue 19, pp. 3745-3753 (2003)

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Ultrahigh contrast imaging with giant segmented-mirror telescopes will involve light levels of order 10-6 times that of the central diffraction spike or less. At these levels it is important to quantify accurately various diffraction effects, including segmentation geometry, intersegment gaps, obscuration by the secondary mirror and its supports, and segment alignment and figure errors. We describe an accurate method for performing such calculations and present preliminary results in the context of the California Extremely Large Telescope.

© 2003 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(050.1940) Diffraction and gratings : Diffraction
(110.6770) Imaging systems : Telescopes
(350.5030) Other areas of optics : Phase

Original Manuscript: October 31, 2002
Revised Manuscript: April 1, 2003
Published: July 1, 2003

Mitchell Troy and Gary Chanan, "Diffraction effects from giant segmented-mirror telescopes," Appl. Opt. 42, 3745-3753 (2003)

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