具有无限小镜面的广义戴维斯-科顿光学系统的性能

IF 4.2 3区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Astroparticle Physics Pub Date : 2024-02-19 DOI:10.1016/j.astropartphys.2024.102948

S. Fegan

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引用次数: 0

摘要

本文介绍了具有无限小镜面的球面光学系统（有时称为 "改良戴维斯-棉花 "望远镜）的成像和定时特性的泰勒展开式。这种系统由曲率半径与其焦距不同的不连续球面镜面组成，其镜面的排列可抑制球面像差。其配置介于两个 "最佳值 "之间，其中一个可最大限度地减少切向漫差，另一个可最大限度地减少时差。

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The performance of generalised Davies–Cotton optical systems with infinitesimal mirror facets

This paper presents Taylor expansions for the imaging and timing characteristics of spherical optical systems with infinitesimal mirror facets, sometimes referred to as “modified Davies–Cotton” telescopes. Such a system comprises a discontinuous spherical mirror surface whose curvature radius is different from its focal length, and whose mirrors are aligned to suppress spherical aberration. Configurations that range between two “optima” are, one of which minimises tangential comatic aberration and the other that minimises timing dispersion.

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来源期刊

Astroparticle Physics 地学天文-天文与天体物理

CiteScore

8.00

自引率

2.90%

发文量

审稿时长

79 days

期刊介绍： Astroparticle Physics publishes experimental and theoretical research papers in the interacting fields of Cosmic Ray Physics, Astronomy and Astrophysics, Cosmology and Particle Physics focusing on new developments in the following areas: High-energy cosmic-ray physics and astrophysics; Particle cosmology; Particle astrophysics; Related astrophysics: supernova, AGN, cosmic abundances, dark matter etc.; Gravitational waves; High-energy, VHE and UHE gamma-ray astronomy; High- and low-energy neutrino astronomy; Instrumentation and detector developments related to the above-mentioned fields.