ZERODUR glass-ceramic thermal and mechanical trades for the next generation of space telescopes

Janina Krieg; Ina Mitra; Ralf Jedamzik; Clemens Kunisch; Tony Hull; Thomas Westerhoff

doi:10.1117/12.3018655

23 August 2024 ZERODUR glass-ceramic thermal and mechanical trades for the next generation of space telescopes

Janina Krieg, Ina Mitra, Ralf Jedamzik, Clemens Kunisch, Tony Hull, Thomas Westerhoff

Author Affiliations +

Proceedings Volume 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 1309240 (2024) https://doi.org/10.1117/12.3018655
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

Habitable Worlds Observatory (HWO) is the current concept of NASA’s next flagship mission on searching for signatures of life on planets outside our solar system. LISA, the Laser Interferometer Space Antenna and ESA’s flagship will detect gravitational waves with the help of a gigantic laser systems spanned by triangle of three satellites each 2,5 billion kilometers apart. Both missions have tremendous requirements on the stability in the picometer range of the materials for the optics, positioning mechanics and optical benches. ZERODUR® has a strong heritage for its extremely low coefficient of thermal expansion and its excellent homogeneity in the single digit ppb/K CTE range over the entire blank volume. At SCHOTT, several development programs are dedicated to fulfilling the requirements of future space telescope missions. Our glass-ceramic material has been analyzed with respect to the low CTE application temperature range and long-time stability. Several geometrical designs are considered to deliver the best trade between stability, stiffness and weight. This paper presents our material property and design results valuable to realizing picometer stability optics.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Janina Krieg, Ina Mitra, Ralf Jedamzik, Clemens Kunisch, Tony Hull, and Thomas Westerhoff "ZERODUR glass-ceramic thermal and mechanical trades for the next generation of space telescopes", Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 1309240 (23 August 2024); https://doi.org/10.1117/12.3018655

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