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Proceedings Paper

ASM: a scaled down Active Segmented Mirror for the Active Phasing Experiment
Author(s): Christophe Dupuy; Frédéric Gonté; Christoph Frank
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Paper Abstract

The construction of extremely large telescope is only possible with a segmented primary mirror. The phasing of the primary mirror due to its size and its number of segments is a main concern at the European Southern Observatory. The European Southern Observatory has developed a test bench called Active Phasing Experiment to study new phasing technology and new telescope control system. The key subsystem of this experiment is a scaled down Active Segmented Mirror (ASM) composed of sixty-one hexagonal segments of seventeen millimeters side to side. Each hexagonal mirror can all be controlled in piston, tip and tilt. The integration of this jewel piece of opto-mechanic started after the successful results obtained with the manufacturing of a prototype composed of only seven modules.

Paper Details

Date Published: 17 July 2008
PDF: 12 pages
Proc. SPIE 7012, Ground-based and Airborne Telescopes II, 70123B (17 July 2008); doi: 10.1117/12.790350
Show Author Affiliations
Christophe Dupuy, European Southern Observatory (Germany)
Frédéric Gonté, European Southern Observatory (Germany)
Christoph Frank, European Southern Observatory (Germany)

Published in SPIE Proceedings Vol. 7012:
Ground-based and Airborne Telescopes II
Larry M. Stepp; Roberto Gilmozzi, Editor(s)

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