Abstract

This paper pursues further applications of the geometric design procedures described previously [ L. Mertz, Appl. Opt. 18, 4182 ( 1979)]. One novel system with a large spherical main mirror provides an almost ideal searchlight solution with numerous potential applications. In addition, several new forms of coma correctors are developed for application with the Arecibo-style telescope configuration.

© 1981 Optical Society of America

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References

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  1. L. Mertz, Appl. Opt. 18, 4182 (1979).
    [Crossref] [PubMed]
  2. B. Authier, L. Hill, M. Duban, P. Trarieux, M. Sarazin, P. Nadeau, Appl. Opt. 18, 3081 (1979).
    [Crossref] [PubMed]
  3. It turns out that S. von Hoerner suggested this configuration long ago at NRAO, but apparently nothing came from it).
  4. L. Mertz, in Optical Instruments and Techniques 1969, J. H. Dickson, Ed. (Oriel, Boston, 1970), p. 507.
  5. L. Mertz, in Optical and Infrared Telescopes for the 1990s, A. Hewitt, Ed. (Kitt Peak National Observatory, Tucson, 1980), p. 957.

1979 (2)

Appl. Opt. (2)

Other (3)

It turns out that S. von Hoerner suggested this configuration long ago at NRAO, but apparently nothing came from it).

L. Mertz, in Optical Instruments and Techniques 1969, J. H. Dickson, Ed. (Oriel, Boston, 1970), p. 507.

L. Mertz, in Optical and Infrared Telescopes for the 1990s, A. Hewitt, Ed. (Kitt Peak National Observatory, Tucson, 1980), p. 957.

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Figures (8)

Fig. 1
Fig. 1

Versatile configuration that matches an almost isotropic point focus to a collimated beam. The main mirror is spherical. Applications include searchlights, solar furnaces, laser fusion optics, infrared telescopes, and microwave dishes.

Fig. 2
Fig. 2

Canonical Arecibo-style telescope configuration.

Fig. 3
Fig. 3

Coma correcting optics including field lenses for the Arecibo-style telescope: (A) f/3.3 output: (B) f/1.9 output.

Fig. 4
Fig. 4

Double ellipsoidal aplanatic transfer system.

Fig. 5
Fig. 5

Folded and rotated double ellipsoidal aplanatic transfer system.

Fig. 6
Fig. 6

Three-mirror telescope.

Fig. 7
Fig. 7

Schematic of coma corrector for Arecibo-style telescope.

Fig. 8
Fig. 8

Adjustable coma corrector. The central element is a transparent plastic disk having a double axicon cavity. Coma contribution is proportional to longitudinal displacement of the central element.

Tables (4)

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Table I Absolute Coordinates of Secondary for Collecting Configuration with Spherical Primary Having Radius = 11.0 and Focus at z = 5.5 (Origin of Coordinates at Center of Curvature of Primary)

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Table II Absolute Coordinates of Secondary for Canonical Arecibo-Style Telescope with Spherical Primary Having Radius = 16.0 and Gregorian Focus at z = 49.0 (Origin at Center of Curvature of Primary)

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Table III Absolute Coordinates of Secondary and Tertiary for Aplanatic Telescope with Spherical Primary Having Radius = 16.0 and Focus at z = −21.0 If Beam Were Unobscured (Origin at Center of Curvature of Primary)

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Table IV Absolute Coordinates of Secondary and Tertiary for Aplanatic Telescope with Spherical Primary Having Radius = 16.0 and Focus at z = −16.019804, x = −17.994760 Before Final Folding (Origin at Center of Curvature of Primary)

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