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At more than 10 million US dollars, the HST primary mirror was a very costly optical surface. In contrast to conventional glass and ceramic mirror substrate, the Space-Forschungsgruppe have made ground based research in subject of carbon fibre composite technologies since eight years. ln the last two years matrix materials from Ciba-Geigy promise to take place instead of large optical areas with a very high rade of mass and a long term of production.
W. W. Ernst
"Materials For Aerospace/Large Optics", Proc. SPIE 0805, Optical Components and Systems, (28 September 1987); https://doi.org/10.1117/12.941369
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W. W. Ernst, "Materials For Aerospace/Large Optics," Proc. SPIE 0805, Optical Components and Systems, (28 September 1987); https://doi.org/10.1117/12.941369