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Proceedings Paper

Optical figuring and testing of the VLT 8.2-m primary mirrors
Author(s): P. Beraud; Jean Espiard; Roland Geyl; Jacques Paseri; Philippe Dierickx; Daniel Enard; Alain Michel
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Paper Abstract

The primary mirrors for the ESO very large telescope project consist of four f/1.8 8.2-m diameter actively supported Zerodur menisci, 175 mm thick. Their optical figuring is under way at REOSC (France) plant. Two mirror blanks have been delivered to the optical manufacturer and the two remaining at the blanks' manufacturer (SCHOOT Mainz, Germany) are due for delivery by the second hald of 1995. Th polishing of the first Zerodur mirror blank is due for completion in the third quarter of 1995. The REOSC optical fabrication and testing methodology will be presented, and the current results will be compared to the specified performance.

Paper Details

Date Published: 8 September 1995
PDF: 8 pages
Proc. SPIE 2536, Optical Manufacturing and Testing, (8 September 1995); doi: 10.1117/12.218460
Show Author Affiliations
P. Beraud, REOSC-SFIM Group (France)
Jean Espiard, REOSC-SFIM Group (France)
Roland Geyl, REOSC-SFIM Group (France)
Jacques Paseri, REOSC-SFIM Group (France)
Philippe Dierickx, European Southern Observatory (Germany)
Daniel Enard, European Southern Observatory (Germany)
Alain Michel, European Southern Observatory (Germany)

Published in SPIE Proceedings Vol. 2536:
Optical Manufacturing and Testing
Victor J. Doherty D.V.M.; H. Philip Stahl, Editor(s)

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