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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 30 — Oct. 20, 2010
  • pp: 5705–5712

All-spherical catadioptric telescope design for wide-field imaging

Mehdi Bahrami and Alexander V. Goncharov  »View Author Affiliations

Applied Optics, Vol. 49, Issue 30, pp. 5705-5712 (2010)

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The current trend in building medium-size telescopes for wide-field imaging is to use a Ritchey–Chrétien (RC) design with a multilens corrector near the focus. Our goal is to find a cost-effective alternative design to the RC system for seeing-limited observations. We present an f / 4.5 all-spherical catadioptric system with a 1.5 ° field of view. The system consists of a 0.8 m spherical primary and 0.4 m flat secondary mirror combined with a meniscus lens and followed by a three-lens field corrector. The optical performance is comparable to an equivalent f / 4.5 RC system. We conclude that, for telescopes with apertures up to 2 m , the catadioptric design is a good alternative to the RC system.

© 2010 Optical Society of America

OCIS Codes
(110.0110) Imaging systems : Imaging systems
(110.6770) Imaging systems : Telescopes
(350.1260) Other areas of optics : Astronomical optics

ToC Category:
Imaging Systems

Original Manuscript: July 28, 2010
Revised Manuscript: September 8, 2010
Manuscript Accepted: September 8, 2010
Published: October 12, 2010

Mehdi Bahrami and Alexander V. Goncharov, "All-spherical catadioptric telescope design for wide-field imaging," Appl. Opt. 49, 5705-5712 (2010)

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