![](https://nthumb.tpgimages.com/mid2_com_img/28103/24056/TOP22307667.jpg)
Hubble Space Telescope mirror under construction at Perkin-Elmer. The construction of the main mirror was begun in 1979 and completed in 1981. However, the polishing ran over budget and behind schedule, producing significant friction with NASA. Due to a miscalibrated null corrector, the primary mirror was also found to have a significant spherical aberration after reaching orbit. A NASA investigation heavily criticized Perkin-Elmer for management failings, disregarding written quality guidelines, and ignoring test data that showed this miscalibration.
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TOP22307667
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達志影像
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RM
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