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Proceedings Paper

Jitter studies for the secondary and tertiary mirror systems on the Thirty Meter Telescope
Author(s): Virginia Ford; Christopher Carter; Christophe Delrez; Pierluigi Fumi; Eric Gabriel; Daniele Gallieni
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Paper Abstract

The Secondary Mirror System (M2S) and Tertiary Mirror System (M3S) of the Thirty Meter Telescope (TMT) consist of passively mounted mirrors supported in kinematic cell assemblies that are moved during telescope tracking to counteract effects of changing zenith angle and thermal gradients within the telescope structure. TMT is concerned that the requirements for pointing jitter during Adaptive Optics tracking for the M2 and M3 Systems are very challenging with a risk of requiring complex stabilization systems for compliance. Both systems were researched to determine whether similar un-stabilized hardware exists that can meet the TMT jitter requirements. Tests using representative TMT tracking motions were then performed to measure jitter on similar existing hardware. The results of these hardware tests have been analyzed. Test results, remaining risk assessment and further testing plans are presented.

Paper Details

Date Published: 19 August 2014
PDF: 15 pages
Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 91512H (19 August 2014); doi: 10.1117/12.2055036
Show Author Affiliations
Virginia Ford, Thirty Meter Telescope Observatory Corp. (United States)
Christopher Carter, Thirty Meter Telescope Observatory Corp. (United States)
Christophe Delrez, AMOS Ltd. (Belgium)
Pierluigi Fumi, A.D.S. International S.r.l. (Italy)
Eric Gabriel, AMOS Ltd. (Belgium)
Daniele Gallieni, A.D.S. International S.r.l. (Italy)

Published in SPIE Proceedings Vol. 9151:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation
Ramón Navarro; Colin R. Cunningham; Allison A. Barto, Editor(s)

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