Which innovative telescope design feature, first successfully implemented in the 1930s, revolutionized astronomical imaging by eliminating spherical aberration and allowing for larger, more powerful instruments?

The astronomy industry has seen remarkable product innovations in telescope technology over the decades. These advancements have revolutionized our understanding of the cosmos and opened new frontiers in space exploration. This poll tests your knowledge about a significant product innovation breakthrough in telescope design that changed astronomical research forever. Consider how product design choices can fundamentally transform scientific capabilities and discovery.

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The Schmidt corrector plate (allowing wide-field imaging with minimal distortion)
The Dobsonian mount (enabling portable large-aperture telescopes)
The Maksutov meniscus lens (creating compact catadioptric systems)
The Ritchey-Chrétien hyperbolic mirrors (implemented later in the 1960s-70s)