Manufacture of 8.4 m off-axis segments: A 1/5 scale demonstration

H. M. Martin, James H Burge, B. Cuerden, S. M. Miller, B. Smith, C. Zhao

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

20 Citations (Scopus)

Abstract

We describe the requirements for manufacturing and maintaining alignment of the 8.4 m off-axis segments of the Giant Magellan Telescope's primary mirror, and a demonstration of the manufacturing techniques on the 1.7 m off-axis primary mirror of the New Solar Telescope. This mirror is approximately a 1/5 scale model of a GMT segment. We show that the stressed lap polishing system developed for highly aspheric primary and secondary mirrors is capable of figuring the GMT segments and the NST mirror. We describe an optical test with a null corrector consisting of a tilted spherical mirror and a computer-generated hologram, and derive accuracy requirements for the test. The criterion for accuracy of low-order aberrations is that the active support system can correct any figure errors due to the laboratory measurement, with acceptably small forces and residual errors.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsE. Atad-Ettedgui, P. Dierickx
Pages62-70
Number of pages9
Volume5494
DOIs
StatePublished - 2004
EventOptical Fabrication, Metrology, and Materials Advancements for Telescopes - Glasgow, United Kingdom
Duration: Jun 24 2004Jun 25 2004

Other

OtherOptical Fabrication, Metrology, and Materials Advancements for Telescopes
CountryUnited Kingdom
CityGlasgow
Period6/24/046/25/04

Fingerprint

Mirrors
Demonstrations
mirrors
Telescopes
manufacturing
telescopes
Holograms
requirements
Polishing
Aberrations
support systems
scale models
polishing
aberration
alignment

Keywords

  • Aspheres
  • Optical fabrication
  • Optical testing
  • Telescopes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Martin, H. M., Burge, J. H., Cuerden, B., Miller, S. M., Smith, B., & Zhao, C. (2004). Manufacture of 8.4 m off-axis segments: A 1/5 scale demonstration. In E. Atad-Ettedgui, & P. Dierickx (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 5494, pp. 62-70) https://doi.org/10.1117/12.552306

Manufacture of 8.4 m off-axis segments : A 1/5 scale demonstration. / Martin, H. M.; Burge, James H; Cuerden, B.; Miller, S. M.; Smith, B.; Zhao, C.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / E. Atad-Ettedgui; P. Dierickx. Vol. 5494 2004. p. 62-70.

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

Martin, HM, Burge, JH, Cuerden, B, Miller, SM, Smith, B & Zhao, C 2004, Manufacture of 8.4 m off-axis segments: A 1/5 scale demonstration. in E Atad-Ettedgui & P Dierickx (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 5494, pp. 62-70, Optical Fabrication, Metrology, and Materials Advancements for Telescopes, Glasgow, United Kingdom, 6/24/04. https://doi.org/10.1117/12.552306
Martin HM, Burge JH, Cuerden B, Miller SM, Smith B, Zhao C. Manufacture of 8.4 m off-axis segments: A 1/5 scale demonstration. In Atad-Ettedgui E, Dierickx P, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 5494. 2004. p. 62-70 https://doi.org/10.1117/12.552306
Martin, H. M. ; Burge, James H ; Cuerden, B. ; Miller, S. M. ; Smith, B. ; Zhao, C. / Manufacture of 8.4 m off-axis segments : A 1/5 scale demonstration. Proceedings of SPIE - The International Society for Optical Engineering. editor / E. Atad-Ettedgui ; P. Dierickx. Vol. 5494 2004. pp. 62-70
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