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    30 m vertical test tower project has been completed and accepted
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    Update time： 2011-11-23
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    on the afternoon of 14 November 2011，30 m vertical test tower project developed by NIAOT was checked and accepted。

    30 m vertical tower can be used to test a large mirror with aperture of 4 m and effectively improve the measurement accuracy，which is the biggest test facility in China。
    Nanjing Institute of Astronomical Optics & Technology ,National Astronomical Observatories ,CAS