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Proceedings Paper

The performances of the GTC secondary mirror drive unit
Author(s): Joan Manel Casalta; Joan Arino; Manuel Canchado; Enric M. Geijo; Albert Molins; Albert Tomas; Lorenzo Zago
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Paper Abstract

This paper summarizes the main aspects of the design and qualification test results of the secondary mirror mechanism for the 10.4-m Gran Telescopio Canarias (GTC). The design of the M2DS consists of a two stage mechanism, a hexapod for alignment using six linear actuators and a compensated tilt/chop stage with three voice coils taking its base on the hexapod mobile plate. The system has been tested after servos adjustment and calibration and the latest results are presented, which illustrate the quality and accuracy of this mechanism in both alignment and chop performances. Finally, the results and experiences are summarized in order to provide useful information for new developments of such systems.

Paper Details

Date Published: 29 September 2004
PDF: 11 pages
Proc. SPIE 5495, Astronomical Structures and Mechanisms Technology, (29 September 2004); doi: 10.1117/12.551868
Show Author Affiliations
Joan Manel Casalta, NTE S.A. (Spain)
Joan Arino, NTE S.A. (Spain)
Manuel Canchado, NTE S.A. (Spain)
Enric M. Geijo, NTE S.A. (Spain)
Albert Molins, NTE S.A. (Spain)
Albert Tomas, NTE S.A. (Spain)
Lorenzo Zago, Ctr. Suisse d'Electronique et de Microtechnique S.A. (Switzerland)

Published in SPIE Proceedings Vol. 5495:
Astronomical Structures and Mechanisms Technology
Joseph Antebi; Dietrich Lemke, Editor(s)

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