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

Shaul Hanany, Daniel P. Marrone

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)4666-4670
Number of pages5
JournalApplied optics
Volume41
Issue number22
DOIs
StatePublished - Aug 1 2002
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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