Which telescope design innovation, first commercialized in the 1970s, dramatically reduced production costs while maintaining optical quality, making amateur astronomy more accessible?

The astronomy industry has seen remarkable technological advancements in telescope design over the decades. These innovations have fundamentally changed how we observe and understand the cosmos. This trivia question explores a significant product innovation milestone in telescope technology that revolutionized both professional astronomy and the consumer market. Test your knowledge of how product design breakthroughs have shaped our window to the stars!

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Schmidt-Cassegrain telescopes with mass-produced corrector plates
Digital adaptive optics systems for atmospheric distortion correction
Hubble-inspired mirror grinding automation technology
Radio telescope miniaturization for consumer markets