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Proceedings Paper

PACT: the actuator to support the primary mirror of the ELT
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Paper Abstract

The European Southern Observatory (ESO) has started technology development for their next generation optical telescope. Due to its ultra large collecting area, The European Extremely Large Telescope (E-ELT) will require a paradigm shift in telescope design to keep the overall program cost at an acceptable level. The E-ELT will feature a 42 meter segmented primary mirror and will make extensive use of active and adaptive optics. Each primary mirror segment will be supported by three actuators that control piston and tilt. TNO has developed a low cost nanopositioning actuator (PACT) for the primary mirror segments. The actuators will be tested by IAC and ESO, with support from TNO, under operational conditions in a Wind Evaluation Breadboard (WEB) at the Roque de Los Muchachos observatory in La Palma.

Paper Details

Date Published: 23 July 2008
PDF: 10 pages
Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 70180Z (23 July 2008); doi: 10.1117/12.789921
Show Author Affiliations
F. Kamphues, TNO Science & Industry (Netherlands)
J. Nijenhuis, TNO Science & Industry (Netherlands)
R. den Breeje, TNO Science & Industry (Netherlands)
T. C. van den Dool, TNO Science & Industry (Netherlands)
J. Ponsioen, TNO Science & Industry (Netherlands)

Published in SPIE Proceedings Vol. 7018:
Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

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