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Applied Optics

Applied Optics


  • Vol. 41, Iss. 22 — Aug. 1, 2002
  • pp: 4666–4670

Comparison of designs of off-axis Gregorian telescopes for millimeter-wave large focal-plane arrays

Shaul Hanany and Daniel P. Marrone  »View Author Affiliations

Applied Optics, Vol. 41, Issue 22, pp. 4666-4670 (2002)

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We compare the diffraction-limited field of view (FOV) provided by four types of off-axis Gregorian telescopes: the classical Gregorian, the aplanatic Gregorian, and the designs that cancel astigmatism and both astigmatism and coma. The analysis is carried out with telescope parameters that are appropriate for satellite and balloonborne millimeter- and submillimeter-wave astrophysics. We find that the design that cancels both coma and astigmatism provides the largest flat FOV, ∼21 square deg. We also find that the FOV can be increased by ∼15% by means of optimizing the shape and location of the focal surface.

© 2002 Optical Society of America

OCIS Codes
(110.3000) Imaging systems : Image quality assessment
(110.6770) Imaging systems : Telescopes
(220.1000) Optical design and fabrication : Aberration compensation
(220.1250) Optical design and fabrication : Aspherics
(220.4830) Optical design and fabrication : Systems design
(260.5430) Physical optics : Polarization

Original Manuscript: October 30, 2001
Revised Manuscript: March 28, 2002
Published: August 1, 2002

Shaul Hanany and Daniel P. Marrone, "Comparison of designs of off-axis Gregorian telescopes for millimeter-wave large focal-plane arrays," Appl. Opt. 41, 4666-4670 (2002)

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  29. Our optimization was performed with the CodeV optimization routine, with our own optimization criteria intended to maximize DLFOV.

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