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Proceedings Paper

Design concepts for the EST mount
Author(s): Hans J. Kärcher; Martin Süss; David Fischer
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Paper Abstract

The EST has unique an optical layout, with an on-axis Gregorian tube system and the altitude axis behind the M1 mirror unit - a great challenge for the mount designer in regard of balancing. Three different structural design concepts and various alternatives for the bearing and drive systems were investigated. Hydrostatic bearings with direct drives are compared with roller bearings and geared drives. The influence of available bearing and drive technology were investigated by FE calculations, dynamic analysis and end-to-end simulations. The finally recommended design concept is based on large-diameter segmented roller bearings and so-called pinion motors in both axes.

Paper Details

Date Published: 17 September 2012
PDF: 12 pages
Proc. SPIE 8444, Ground-based and Airborne Telescopes IV, 84440M (17 September 2012); doi: 10.1117/12.925159
Show Author Affiliations
Hans J. Kärcher, MT Mechatronics GmbH (Germany)
Martin Süss, MT Mechatronics GmbH (Germany)
David Fischer, MT Mechatronics GmbH (Germany)

Published in SPIE Proceedings Vol. 8444:
Ground-based and Airborne Telescopes IV
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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