Which telescope design innovation by Celestron in the 1970s dramatically reduced manufacturing costs and made quality telescopes more accessible to amateur astronomers?

The design of astronomy tools and telescopes has evolved dramatically over centuries. Modern astronomy equipment represents some of the most sophisticated product design challenges in science and technology. This poll tests your knowledge of a pivotal product design transition that revolutionized amateur astronomy and transformed the market landscape.

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Schmidt-Cassegrain with mass-produced corrector plates
Digital star-tracking motor drives
Carbon fiber telescope tubes
Multi-coated objective lenses