Compact Three Mirror Anastigmat Space Telescope Design using 6.5m Monolithic Primary Mirror

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The utilization of a 6.5m monolithic primary mirror in a compact three-mirror anastigmat (TMA) telescope design offers unprecedented capabilities to accommodate various next generation science instruments. This design enables the rapid and efficient development of a large aperture telescope without segmented mirrors while maintaining a compact overall form factor. With its exceptional photon collection area and diffraction-limited resolving power, the TMA design is ideally suited for both the ground and space active/adaptive optics concepts, which require the capture of natural guide stars within the field of view for wavefront measurement to correct for misalignments and shape deformation caused by thermal gradients. The wide field of view requirement is based on a statistical analysis of bright natural guide stars available during observation. The primary mirror clear aperture, compactness requirement, and detector pixel sizes led to the choice of TMA over simpler two-mirror solutions like Ritchey-Chretien (RC) telescopes, and the TMA design offers superior diffraction-limited performance across the entire field of view. The standard conic surfaces applied to all three mirrors (M1, M2, and M3) simplify the optical fabrication, testing, and alignment process. Additionally, the TMA design is more tolerant than RC telescopes. Stray light control is critical for UV science instrumentation, and the field stop and Lyot stop are conveniently located in the TMA design for this purpose.

Original languageEnglish (US)
Title of host publicationAstronomical Optics
Subtitle of host publicationDesign, Manufacture, and Test of Space and Ground Systems IV
EditorsTony B. Hull, Daewook Kim, Pascal Hallibert
PublisherSPIE
ISBN (Electronic)9781510665682
DOIs
StatePublished - 2023
EventAstronomical Optics: Design, Manufacture, and Test of Space and Ground Systems IV 2023 - San Diego, United States
Duration: Aug 21 2023Aug 24 2023

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12677

Conference

ConferenceAstronomical Optics: Design, Manufacture, and Test of Space and Ground Systems IV 2023
Country/TerritoryUnited States
CitySan Diego
Period8/21/238/24/23

Keywords

  • 6.5 m primary mirror
  • Monolithic mirror
  • TMA design
  • Three mirror anastigmat telescope
  • compact TMA

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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