
Proceedings Paper
Development of CFRP mirrors for low-temperature application of satellite telescopesFormat | Member Price | Non-Member Price |
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Paper Abstract
Ultra-lightweight and high-accuracy CFRP (carbon fiber reinforced plastics) mirrors for space telescopes were fabricated
and their feasibility for low temperature applications was demonstrated. The CFRP mirrors were composed of sandwich
panels with CFRP skins and CFRP honeycomb cores. Surface was deposited with epoxy thin layers by using a replica
technique. The surface accuracy of the demonstrate mirrors of 150 mm in diameter was 0.8 μm RMS and the surface
smoothness was improved to 5 nm RMS. Surface accuracy degradation was 0.6μm RMS (root mean square) from
ambient temperature to liquid nitrogen. Surface asperity was classified with respect of their wave intervals and
measurement areas. Surface accuracy and dimensional stability were strictly affected by raw materials and
manufacturing conditions. Surface accuracy was measured at each process on the way of mirror forming. Manufacturing
conditions to depress asperity were discussed.
Paper Details
Date Published: 13 September 2012
PDF: 7 pages
Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 84502R (13 September 2012); doi: 10.1117/12.926133
Published in SPIE Proceedings Vol. 8450:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II
Ramón Navarro; Colin R. Cunningham; Eric Prieto, Editor(s)
PDF: 7 pages
Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 84502R (13 September 2012); doi: 10.1117/12.926133
Show Author Affiliations
Shin Utsunomiya, Japan Aerospace Exploration Agency (Japan)
Tomohiro Kamiya, Japan Aerospace Exploration Agency (Japan)
Tomohiro Kamiya, Japan Aerospace Exploration Agency (Japan)
Ryuzo Shimizu, Japan Aerospace Exploration Agency (Japan)
Published in SPIE Proceedings Vol. 8450:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II
Ramón Navarro; Colin R. Cunningham; Eric Prieto, Editor(s)
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