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Proceedings Paper

Practical aspects of specification of extreme lightweight ZERODUR mirrors for spaceborne missions
Author(s): Tony Hull; Thomas Westerhoff; Antoine Lays; John Pepi
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Paper Abstract

Extreme Lightweight ZERODUR® Mirrors, analyzed and described in our recent series of papers, have been demonstrated via a representative 1.2m diameter mirror (88% isogrid lightweighted with f0>200Hz). The attributes of such mirrors are suitable for spaceflight in sizes form < 0.5m to > 4m, while the manufacturing approach is compatible with attractive mirror substrate cost and delivery schedules. We will review manufacturing approach together with recent data on the low magnitude and homogeneity of the coefficient of thermal expansion, and on the toughness of the material. Simple ways to specify these mirrors are summarized.

Paper Details

Date Published: 18 September 2013
PDF: 7 pages
Proc. SPIE 8836, Optomechanical Engineering 2013, 883607 (18 September 2013); doi: 10.1117/12.2026589
Show Author Affiliations
Tony Hull, The Univ. of New Mexico (United States)
SCHOTT North America, Inc. (United States)
Thomas Westerhoff, SCHOTT AG (Germany)
Antoine Lays, SCHOTT AG (Germany)
John Pepi, L-3 Communications IOS-SSG (United States)

Published in SPIE Proceedings Vol. 8836:
Optomechanical Engineering 2013
Alson E. Hatheway, Editor(s)

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