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Updated: Jun 16, 2026

Bringing the Visible Universe into Focus with Robo-AO
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Published on: February 12, 2013

Anastigmatic two-mirror telescopes: some new types.

D R Shafer

    Applied Optics
    |February 20, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A novel two-mirror telescope design utilizes a double reflection off the primary mirror. This configuration corrects spherical aberration, coma, and astigmatism, offering versatile anastigmatic optical forms.

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    Area of Science:

    • Optics and Astronomy
    • Telescope Design

    Background:

    • Traditional two-mirror telescopes face limitations in aberration correction.
    • Developing advanced optical systems is crucial for improved astronomical observation.

    Purpose of the Study:

    • To introduce and analyze a novel two-mirror telescope design.
    • To demonstrate the potential for aberration correction in this new configuration.

    Main Methods:

    • Describing a telescope design with a secondary mirror reflecting light back to the primary mirror.
    • Analyzing the optical path for spherical aberration, coma, and astigmatism correction.
    • Identifying distinct families of anastigmatic designs.

    Main Results:

    • The double-bounce design allows for correction of spherical aberration, coma, and astigmatism.
    • Four distinct families of anastigmatic telescope designs were identified.
    • The study details interesting designs and provides performance metrics.

    Conclusions:

    • The described two-mirror telescope offers significant advantages in optical correction.
    • This design opens avenues for a wide range of anastigmatic optical forms.
    • Further exploration of these designs can lead to enhanced astronomical instruments.