Which telescope innovation created the biggest market disruption in amateur astronomy during the 1990s-2000s, making stargazing more accessible to casual consumers?

The astronomy consumer market has undergone significant changes in recent decades. From traditional optical telescopes to computerized systems and smartphone-compatible devices, manufacturers have adapted to changing consumer preferences and technological capabilities. This poll tests your knowledge about a major market shift that revolutionized amateur astronomy and changed how telescopes were marketed and sold to consumers.

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GoTo computerized mount systems that automatically locate celestial objects
Introduction of Schmidt-Cassegrain telescope designs that reduced telescope size
Dobsonian telescope mounts that dramatically reduced the cost of large aperture telescopes
Digital eyepieces that replaced traditional optical viewing with electronic displays