All those factors are important. In this case, the commission attributed the faults mainly to Perkin-Elmer, NASA discovered that it had not used its best opticians or adequately supervised the process of construction of the mirror. All this because only one lens was out of position 1.3 mm. What delayed such a large project for 3 years. Three years that would have been used for space research, instead of the manufacture of a corrective lens.
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