Grinding metre scale mirror segments for the E-ELT ground based telescope

Comley, Paul; Morantz, Paul; Shore, Paul; Tonnellier, Xavier

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dc.contributor.author	Comley, Paul	-
dc.contributor.author	Morantz, Paul	-
dc.contributor.author	Shore, Paul	-
dc.contributor.author	Tonnellier, Xavier	-
dc.date.accessioned	2011-08-19T23:01:06Z
dc.date.available	2011-08-19T23:01:06Z
dc.date.issued	2011-04-21T00:00:00Z	-
dc.identifier.citation	P. Comley, P. Morantz, P. Shore and X. Tonnellier, Grinding metre scale mirror segments for the E-ELT ground based telescope, CIRP Annals - Manufacturing Technology, Volume 60, Issue 1, 2011, Pages 379-382.
dc.identifier.issn	0007-8506	-
dc.identifier.uri	http://dx.doi.org/10.1016/j.cirp.2011.03.120	-
dc.identifier.uri	http://dspace.lib.cranfield.ac.uk/handle/1826/5779
dc.description.abstract	The next generation of ground based telescopes require many hundreds of metre scale off-axis mirrors. In this paper the grinding of a 1.45m scale Zerodur® mirror segment for the European Extremely Large Telescope (E-ELT) is introduced. Employing an R-theta grinding mode with a multi stage grinding process material removal rates of up to 187.5mm3/s are achieved, whilst typically removing up to 1mm depth of material in total. Results show a RMS form error of <1μm, with subsurface damage <10μm, and a production cycle time under 2	en_UK
dc.language.iso	en_UK	en_UK
dc.publisher	Technische Rundschau, Hallwag Publishers; 1999	en_UK
dc.rights	NOTICE: this is the author’s version of a work that was accepted for publication in CIRP Annals - Manufacturing Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in CIRP Annals - Manufacturing Technology, VOL 60, ISSUE 1, (2011) DOI: 10.1016/j.cirp.2011.03.120
dc.title	Grinding metre scale mirror segments for the E-ELT ground based telescope	en_UK
dc.type	Article	en_UK