Lightweight high-performance 1-4 meter class spaceborne mirrors: emerging technology for demanding spaceborne requirements

Tony Hull; Peter Hartmann; Andrew R. Clarkson; John M. Barentine; Ralf Jedamzik; Thomas Westerhoff

doi:10.1117/12.857900

19 July 2010 Lightweight high-performance 1-4 meter class spaceborne mirrors: emerging technology for demanding spaceborne requirements

Tony Hull, Peter Hartmann, Andrew R. Clarkson, John M. Barentine, Ralf Jedamzik, Thomas Westerhoff

Author Affiliations +

Proceedings Volume 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation; 77390C (2010) https://doi.org/10.1117/12.857900
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

Pending critical spaceborne requirements, including coronagraphic detection of exoplanets, require exceptionally smooth mirror surfaces, aggressive lightweighting, and low-risk cost-effective optical manufacturing methods. Simultaneous development at Schott for production of aggressively lightweighted (>90%) Zerodur^® mirror blanks, and at L-3 Brashear for producing ultra-smooth surfaces on Zerodur^®, will be described. New L-3 techniques for large-mirror optical fabrication include Computer Controlled Optical Surfacing (CCOS) pioneered at L-3 Tinsley, and the world's largest MRF machine in place at L-3 Brashear. We propose that exceptional mirrors for the most critical spaceborne applications can now be produced with the technologies described.

Citation Download Citation

Tony Hull, Peter Hartmann, Andrew R. Clarkson, John M. Barentine, Ralf Jedamzik, and Thomas Westerhoff "Lightweight high-performance 1-4 meter class spaceborne mirrors: emerging technology for demanding spaceborne requirements", Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 77390C (19 July 2010); https://doi.org/10.1117/12.857900

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