Polarization Aberrations in an Unobscured Off-Axis Astronomical Telescope and Their Effects on Optics Ellipticity

doi:10.3788/AOS202040.0811001

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	Polarization Aberrations in an Unobscured Off-Axis Astronomical Telescope and Their Effects on Optics Ellipticity
	J. Luo,X. He,K. Fan,X. Zhang and J. Dong
刊名	Guangxue Xuebao/Acta Optica Sinica
	2020
卷号	40 期号:8
ISSN号	2532239
DOI	10.3788/AOS202040.0811001
英文摘要	Because of the continuously increasing detection ability in astronomy, polarization aberrations are playing increasingly important roles in the performance of astronomical telescopes. In this paper, the polarization aberrations of an unobscured off-axis astronomical telescope used to detect weak gravitational lensing effect are analyzed using polarization ray tracing. The diattenuation map and retardance map of each mirror for the telescope are obtained, and both its Jones pupil and amplitude response matrix are determined. It is found that the polarization aberrations of the telescope have an impact on both the imaging contrast and the spatial distribution of the point spread function (PSF). The optics ellipticity of the telescope is analyzed. The variations of optics ellipticity, which are dependent on the field of view (FOV), are induced by polarization aberrations. The maximum and mean variations of the optics ellipticity in all FOVs are 7.510-3 and 2.710-3, respectively. At the FOV [-0.0487, 0.155], the maximum ellipticity interpolation error increases from 1.210-4 to 1.110-3. Our analyses reveal that polarization aberrations should not be ignored and should be optimized in telescopes that require ultrahigh imaging performance, such as those used for detecting weak gravitational lensing effect. 2020, Chinese Lasers Press. All right reserved.
URL标识	查看原文
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/64796]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	J. Luo,X. He,K. Fan,X. Zhang and J. Dong. Polarization Aberrations in an Unobscured Off-Axis Astronomical Telescope and Their Effects on Optics Ellipticity[J]. Guangxue Xuebao/Acta Optica Sinica,2020,40(8).
APA	J. Luo,X. He,K. Fan,X. Zhang and J. Dong.(2020).Polarization Aberrations in an Unobscured Off-Axis Astronomical Telescope and Their Effects on Optics Ellipticity.Guangxue Xuebao/Acta Optica Sinica,40(8).
MLA	J. Luo,X. He,K. Fan,X. Zhang and J. Dong."Polarization Aberrations in an Unobscured Off-Axis Astronomical Telescope and Their Effects on Optics Ellipticity".Guangxue Xuebao/Acta Optica Sinica 40.8(2020).