Which telescope design innovation by Celestron in the 1970s revolutionized amateur astronomy by making compact, high-quality observation accessible to the public?

The astronomy industry has seen remarkable product designs that have transformed how we interact with the cosmos. From telescopes to planetarium projectors, certain innovations have not only advanced scientific discovery but also become iconic in popular culture. This poll tests your knowledge about a revolutionary product design that changed how the general public perceives astronomical observation. Can you identify the correct design innovation that sparked widespread interest in amateur astronomy?

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The Schmidt-Cassegrain optical system, which allowed for portable telescopes with long focal lengths
The Dobsonian mount design, featuring a simplified altazimuth mounting system
The first automated GoTo computerized telescope tracking system
The introduction of apochromatic refractor lenses in consumer telescopes