The challenges for large light-weight diffractive lenses for space telescopes

S. Roose; Y. Stockman; D. Derauw; L. Datashvlli; H. Baier

doi:10.1117/12.2304140

17 November 2017 The challenges for large light-weight diffractive lenses for space telescopes

S. Roose, Y. Stockman, D. Derauw, L. Datashvlli, H. Baier

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Proceedings Volume 10563, International Conference on Space Optics — ICSO 2014; 105635Y (2017) https://doi.org/10.1117/12.2304140
Event: International Conference on Space Optics — ICSO 2014, 2014, Tenerife, Canary Islands, Spain

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.

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S. Roose, Y. Stockman, D. Derauw, L. Datashvlli, and H. Baier "The challenges for large light-weight diffractive lenses for space telescopes", Proc. SPIE 10563, International Conference on Space Optics — ICSO 2014, 105635Y (17 November 2017); https://doi.org/10.1117/12.2304140

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