Non-axisymmetric Aberration Patterns from Wide-field Telescopes Using Spin-weighted Zernike Polynomials

被引：7

作者：

Kent, Stephen M. ^{[1
]}

机构：

[1] Fermilab Natl Accelerator Lab, MS 127,POB 500, Batavia, IL 60510 USA

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 2018年 / 130卷 / 986期

关键词：

methods: analytical; telescopes; ATMOSPHERIC-TURBULENCE; OPTICAL-ABERRATION; POLARIZATION; EXPANSION;

D O I：

10.1088/1538-3873/aaa6b8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

If the optical system of a telescope is perturbed from rotational symmetry, the Zernike wavefront aberration coefficients describing that system can be expressed as a function of position in the focal plane using spin-weighted Zernike polynomials. Methodologies are presented to derive these polynomials to arbitrary order. This methodology is applied to aberration patterns produced by a misaligned Ritchey-Chretien telescope and to distortion patterns at the focal plane of the DESI optical corrector, where it is shown to provide a more efficient description of distortion than conventional expansions.

引用

页数：11

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