Walker, D.D., Atkins, C., Baker, I., Evans, R., Hamidi, S., Harris, P., Li, H., Messelink, W., Mitchell, J., Parry-Jones, M., Rees, P. and Yu, G. (2011) Technologies for producing segments for Extremely Large Telescopes. Proceedings of SPIE, 8126. ISSN 0277-786X
Metadata only available from this repository.Abstract
We describe progress on a novel process-chain being used to produce eight 1.4m hexagonal segments as prototypes for the European Extremely Large Telescope - a Master Spherical Segment as a reference, and seven aspheric segments. A new pilot plant integrates a bespoke full-aperture test-tower designed and built by OpTIC Glyndŵr, with a Zeeko 1.6m polishing machine. The process chain starts with aspherising hexagonal segments on the Cranfield BoX grinder, followed by smoothing, corrective-polishing and edge-rectification using the Zeeko CNC platform. The paper describes the technology and progress, and anticipates how the process-chain is expected to evolve through the seven segments to increase both process-speed and surface-quality.
Item Type: | Article |
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Subjects: | T Technology > TS Manufactures |
Schools: | School of Computing and Engineering School of Computing and Engineering > Centre for Precision Technologies |
Related URLs: | |
Depositing User: | Catherine Parker |
Date Deposited: | 29 Nov 2016 15:14 |
Last Modified: | 28 Aug 2021 12:11 |
URI: | http://eprints.hud.ac.uk/id/eprint/30412 |
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