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Proceedings Paper

The active phasing experiment: Part I. Concept and objectives
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Paper Abstract

In a framework of ELT design study our group is building an Active Phasing Experiment (APE), the main goals of which is to demonstrate the non-adaptive wavefront control scheme and technology for Extremely Large Telescope (ELT). The experiment includes verification and test of different phasing sensors and integration of a phasing wavefront sensor into a global scheme of segmented telescope active control. After a sufficient number of tests in the laboratory APE will be mounted and tested on sky at a Nasmyth focus of a VLT unit telescope. The paper presents APE as a demonstrator of particular aspects of ELT and provides a general understanding concerning the strategy of segmented mirrors active control.

Paper Details

Date Published: 26 June 2006
PDF: 11 pages
Proc. SPIE 6267, Ground-based and Airborne Telescopes, 62672Z (26 June 2006);
Show Author Affiliations
Natalia Yaitskova, European Southern Observatory (Germany)
Frederic Gonte, European Southern Observatory (Germany)
Frederic Derie, European Southern Observatory (Germany)
Lothar Noethe, European Southern Observatory (Germany)
Isabelle Surdej, European Southern Observatory (Germany)
Robert Karban, European Southern Observatory (Germany)
Kjetil Dohlen, Observatoire Astronomique de Marseille-Provence (France)
Maud Langlois, Observatoire Astronomique de Marseille-Provence (France)
Simone Esposito, Osservatorio Astrofisico di Arcetri (Italy)
Enrico Pinna, Osservatorio Astrofisico di Arcetri (Italy)
Marcos Reyes, Instituto de Astrofisica de Canarias (Spain)
Lusma Montoya, Instituto de Astrofisica de Canarias (Spain)
David Terrett, Rutherford Appleton Lab. (United Kingdom)

Published in SPIE Proceedings Vol. 6267:
Ground-based and Airborne Telescopes
Larry M. Stepp, Editor(s)

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