Alignment analysis of four-mirror spherical aberration correctors

Anastacia M. Hvisc, James H Burge

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

14 Citations (Scopus)

Abstract

Telescopes use primary mirrors with spherical shape to reduce the cost of the mirror fabrication and to allow the mirror to operate at fixed elevation. These advantages become significant as the size of the telescope grows. However, the disadvantage of the spherical primary is a large amount of spherical aberration which needs to be corrected. We present an analysis of alignment issues for four-mirror spherical aberration correctors for spherical primary mirror telescopes. The sensitivities of image quality across the field (in terms of spot size) to mirror misalignments are found. These sensitivities are useful in choosing the tolerances for the mechanical assembly holding the corrector. A singular value decomposition of the sensitivity matrix shows the combination of element motions that result in orthogonal aberration modes. Studying these combinations of modes and misalignments can lead to a conceptual understanding of the system, which aids in the initial and operational alignment of the spherical aberration corrector.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7018
DOIs
StatePublished - 2008
EventAdvanced Optical and Mechanical Technologies in Telescopes and Instrumentation - Marseille, France
Duration: Jun 23 2008Jun 28 2008

Other

OtherAdvanced Optical and Mechanical Technologies in Telescopes and Instrumentation
CountryFrance
CityMarseille
Period6/23/086/28/08

Fingerprint

Corrector
Aberrations
Aberration
aberration
Mirror
Mirrors
Alignment
alignment
mirrors
Telescopes
Telescope
Misalignment
telescopes
misalignment
sensitivity
Singular value decomposition
Image quality
Image Quality
Tolerance
Fabrication

Keywords

  • Aberrations
  • Alignment
  • SVD
  • Telescopes
  • Tolerancing
  • Zernike polynomials

ASJC Scopus subject areas

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

Cite this

Hvisc, A. M., & Burge, J. H. (2008). Alignment analysis of four-mirror spherical aberration correctors. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7018). [701819] https://doi.org/10.1117/12.789881

Alignment analysis of four-mirror spherical aberration correctors. / Hvisc, Anastacia M.; Burge, James H.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7018 2008. 701819.

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

Hvisc, AM & Burge, JH 2008, Alignment analysis of four-mirror spherical aberration correctors. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 7018, 701819, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, Marseille, France, 6/23/08. https://doi.org/10.1117/12.789881
Hvisc AM, Burge JH. Alignment analysis of four-mirror spherical aberration correctors. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7018. 2008. 701819 https://doi.org/10.1117/12.789881
Hvisc, Anastacia M. ; Burge, James H. / Alignment analysis of four-mirror spherical aberration correctors. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7018 2008.
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