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Proceedings Paper

REOSC starts to work on the first VLT mirror
Author(s): Jean Espiard; Roland Geyl
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Paper Abstract

REOSC has been awarded by the European Southern Observatory (E.S.O.), in July 1989, a contract to transport, grind, polish, figure and test the four 8.2m primary mirrors of the European Very Large Telescope (VLT). The following tasks are included in this contract: - the design and manufacture ofthe mirror handling tool and shipping container, the mirror blank transportation from SCHOTT plant in Mainz to REOSC optical shop, - the design, manufacture and bonding onto the mirror of the axial and lateral interfaces between the mirror and the actuators of the mirror cell lateral and axial supports, - the grinding, polishing, figuring and testing of the four mirrors, -the packing ofthe achieved mirror in the container. Furthermore, in the framework of this contract, a new optical shop specially adapted to mill, grind, polish and test 8m class mirrors has been designed and built. The first 8.2m mirror blank has been successfiuly transported last July from Mainz to REOSC's optical shop and the subject of this paper is to give a short description of this new plant and its equipment and the first results obtained by spherornetry after the first rough mirror grinding.

Paper Details

Date Published: 1 June 1994
PDF: 13 pages
Proc. SPIE 2199, Advanced Technology Optical Telescopes V, (1 June 1994); doi: 10.1117/12.176171
Show Author Affiliations
Jean Espiard, REOSC (France)
Roland Geyl, REOSC (France)

Published in SPIE Proceedings Vol. 2199:
Advanced Technology Optical Telescopes V
Larry M. Stepp, Editor(s)

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