Which telescope product development innovation, introduced by Celestron in the 1970s, dramatically transformed the amateur astronomy market by making powerful telescopes more affordable and portable?

The astronomy equipment industry has undergone remarkable changes over the past decades. As stargazing became more accessible to amateur astronomers, telescope manufacturers had to adapt their product development strategies to meet changing consumer demands. This poll tests your knowledge about a pivotal moment in telescope product development that revolutionized the amateur astronomy market.

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The Schmidt-Cassegrain design with mass-produced corrector plates
The computerized GoTo mount system with automated star tracking
The carbon fiber optical tube assembly for reduced weight
The apochromatic triplet refractor with ED glass elements