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Please use this identifier to cite or link to this item: http://dspace.lib.cranfield.ac.uk/handle/1826/5779

Document Type: Article
Title: Grinding metre scale mirror segments for the E-ELT ground based telescope
Authors: Comley, Paul
Morantz, Paul
Shore, Paul
Tonnellier, Xavier
Issue Date: 2011
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.
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
URI: http://dx.doi.org/10.1016/j.cirp.2011.03.120
http://dspace.lib.cranfield.ac.uk/handle/1826/5779
Appears in Collections:Staff publications - School of Applied Sciences

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