Share Email Print

Proceedings Paper

Mechanical principles of large mirror supports
Author(s): Hans J. Kärcher; Peter Eisenträger; Martin Süss
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Large thin meniscus mirrors use force-controlled shape actuators to obtain the required optical performance. The shape actuators can be interpreted as an advancement of classical mirror supports as whiffle trees or iso-static levers, which worked purely mechanical. The paper develops, after a short historical overview, the theoretical background of mirror mechanics. Different combinations of force-controlled shape actuators with mechanical, hydraulic or pneumatic whiffle trees or iso-static levers are analyzed in regard of their impact on optical performance, dynamic and control behavior. The investigations were the basis for the choice of the shape actuator system for the E-ELT M2, executed by MT Mechatronics under an ESO contract in 2008-09.

Paper Details

Date Published: 6 August 2010
PDF: 12 pages
Proc. SPIE 7733, Ground-based and Airborne Telescopes III, 77332O (6 August 2010); doi: 10.1117/12.855935
Show Author Affiliations
Hans J. Kärcher, MT Mechatronics GmbH (Germany)
Peter Eisenträger, MT Mechatronics GmbH (Germany)
Martin Süss, MT Mechatronics GmbH (Germany)

Published in SPIE Proceedings Vol. 7733:
Ground-based and Airborne Telescopes III
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?