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Proceedings Paper • Open Access

The challenges for large light-weight diffractive lenses for space telescopes
Author(s): S. Roose; Y. Stockman; D. Derauw; L. Datashvlli; H. Baier

Paper Abstract

Large light-weight telescopes in space are considered key elements enabling future earth observation and space science. The first large space telescope, “Hubble”, uses a monolithic aspheric primary mirror of 2.4 m diameter. The Hubble Space Telescope primary mirror has an area density of about 180 kg/m2. This monolithic approach cannot be used for much larger telescopes due to mass and volume limitations imposed by today’s launch capabilities. Thus the current generation space telescope, the James Webb Space Telescope now under development, makes use of a segmented aspheric primary mirror of 6.5 m diameter. The area density will be below 20 kg/m2.

Paper Details

Date Published: 17 November 2017
PDF: 9 pages
Proc. SPIE 10563, International Conference on Space Optics — ICSO 2014, 105635Y (17 November 2017); doi: 10.1117/12.2304140
Show Author Affiliations
S. Roose, Ctr. Spatial de Liège (Belgium)
Y. Stockman, Ctr. Spatial de Liège (Belgium)
D. Derauw, Ctr. Spatial de Liège (Belgium)
L. Datashvlli, Technische Univ. München (Germany)
H. Baier, Technische Univ. München (Germany)

Published in SPIE Proceedings Vol. 10563:
International Conference on Space Optics — ICSO 2014
Zoran Sodnik; Bruno Cugny; Nikos Karafolas, Editor(s)

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