Which product design innovation is credited with making astronomy more accessible to beginners in the 1990s, leading to a substantial market expansion?

The astronomy industry has seen remarkable innovations in telescope and stargazing product design over the decades. From traditional optical telescopes to modern computerized tracking systems, the evolution of astronomy products reflects both technological advancement and changing consumer needs. This trivia question explores a pivotal product design decision that revolutionized amateur astronomy and significantly expanded the market. Test your knowledge about how product design choices have shaped our ability to explore the cosmos!

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GoTo computerized mounts that automatically locate celestial objects
Schmidt-Cassegrain hybrid telescope designs that reduced telescope size
Smartphone telescope adapters that allowed for astrophotography
Digital eyepieces that replaced traditional optical viewing