Dimensional metrology of mirror segments for extremely-large telescopes

Graham Peggs, Richard May-Miller, David Walker, Eli Atad, Paul Shore, David Smith

Research output: Contribution to journalConference article

Abstract

Metrology is critical amongst the challenges associated with the production of mirror segments on the scale required by proposed extremely-large telescopes. To achieve the optical specification in a reasonable time requires measurements with an unprecedented combination of accuracy, stability and speed. This study suggests combining several promising methods for use at different stages of production. Pallet mounting is proposed to permit the segments to be handled without significant distortion and to provide fiducials for precise location of the segment. Final qualification of a segment would include comparison with a master reference that had been certified by consensus among a number of independent experts.

Original languageEnglish
Pages (from-to)224-228
Number of pages5
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5382
DOIs
Publication statusPublished - 7 Jul 2004
Externally publishedYes
EventSecond Backaskog Workshop on Extremely Large Telescopes - Backaskog Castle, Sweden
Duration: 9 Sep 200311 Sep 2003

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Extremely Large Telescopes
Metrology
Telescopes
metrology
Mirror
Mirrors
telescopes
mirrors
Pallets
Time measurement
Mountings
Specifications
Qualification
qualifications
mounting
specifications
time measurement
Specification

Cite this

Peggs, Graham ; May-Miller, Richard ; Walker, David ; Atad, Eli ; Shore, Paul ; Smith, David. / Dimensional metrology of mirror segments for extremely-large telescopes. In: Proceedings of SPIE - The International Society for Optical Engineering. 2004 ; Vol. 5382. pp. 224-228.
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Dimensional metrology of mirror segments for extremely-large telescopes. / Peggs, Graham; May-Miller, Richard; Walker, David; Atad, Eli; Shore, Paul; Smith, David.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 5382, 07.07.2004, p. 224-228.

Research output: Contribution to journalConference article

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