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    Technology of replication for aspherical (project of National Natural Science Foundation of China)
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    Update time： 2009-09-01
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    　It was  checked and accepted by specialist group on 30th，January，2008。

    　two ellipsoid mirrors with aperture 400mm，f/1.62 were replicated firstly in China，twice replication technology were adopted in order to solve the difficult problem for testing of master mould of convex aspherical surface。

    　　

    Nanjing Institute of Astronomical Optics & Technology ,National Astronomical Observatories ,CAS