All-spherical catadioptric system for 0.8m F/4.5 astronomical telescope: Can we compete with the Ritchey-Chrétien design?

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Abstract

Aspherical surfaces are difficult to manufacture, therefore we consider a possibility of using only spherical surfaces. Two optical designs for 800-mm F/4.5 seeing limited telescope are considered: Ritchey-Chrétien and a two-mirror Catadioptric system. The Ritchey-Chrétien system has a hyperboloidal primary mirror, a planoid aspheric secondary mirror, and a two-lens field corrector, whereas the all-spherical system contains a Mangin mirror and a meniscus corrector as the secondary group and a three-lens corrector. Our analysis of the image quality achieved in the two designs shows that the all-spherical catadioptric system is an acceptable alternative to the Ritchey-Chrétien design.

Original languageEnglish
Title of host publicationInternational Optical Design Conference 2010
DOIs
Publication statusPublished - 2010
EventInternational Optical Design Conference 2010 - Jackson Hole, WY, United States
Duration: 13 Jun 201017 Jun 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7652
ISSN (Print)0277-786X

Conference

ConferenceInternational Optical Design Conference 2010
Country/TerritoryUnited States
CityJackson Hole, WY
Period13/06/1017/06/10

Keywords

  • All-spherical design
  • Astronomical optics
  • Catadioptric system
  • Optical system design
  • Telescopes

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