@inproceedings{57306b082ff84db58e39d5decb0a14ca,
title = "Cosmic Evolution through UV Surveys (CETUS): Point spread function analysis of three mirror anastigmat telescope",
abstract = "Cosmic Evolution through UV Surveys (CETUS) is a concept for a UV space telescope that was studied with funding from NASA. The CETUS Final Report is posted at arXiv: 1909.10437, but post-report studies are continuing. Here, we describe telescope design options for CETUS including a trade study between a traditional on-axis three-mirror anastigmat (TMA) and freeform off-axis TMA solution considering their alignment sensitivity and tolerances. Different secondary support structures are explored for the on-axis design to analyze the irradiance distribution of the point-spread function (PSF) due to the pupil obscuration and how it influences the simulated starfield at the telescope focal planes. With rigorous and judicious analysis in geometrical optical design and physical wave propagation modeling, we aim to enable the next generation of spaceborne optical observatory for UV astronomy.",
keywords = "Diffraction, Freeform, Linear astigmatism, Space telescope, Ultraviolet",
author = "Ashcraft, {Jaren N.} and Heejoo Choi and Heap, {Sara R.} and Woodruff, {Robert A.} and Daewook Kim",
note = "Funding Information: Cosmic Evolution through UV Surveys (CETUS) is a concept for a UV space telescope that was studied with funding from NASA. The CETUS Final Report is posted at arXiv: 1909.10437, but post-report studies are continuing. Here, we describe telescope design options for CETUS including a trade study between a traditional on-axis three-mirror anastigmat (TMA) and freeform off-axis TMA solution considering their alignment sensitivity and tolerances. Different secondary support structures are explored for the on-axis design to analyze the irradiance distribution of the point-spread function (PSF) due to the pupil obscuration and how it influences the simulated starfield at the telescope focal planes. With rigorous and judicious analysis in geometrical optical design and physical wave propagation modeling, we aim to enable the next generation of spaceborne optical observatory for UV astronomy. Publisher Copyright: {\textcopyright} 2021 SPIE.; Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems III 2021 ; Conference date: 01-08-2021 Through 05-08-2021",
year = "2021",
doi = "10.1117/12.2598879",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Hull, {Tony B.} and Daewook Kim and Pascal Hallibert and Fanny Keller",
booktitle = "Astronomical Optics",
}