Which revolutionary product design feature did Celestron introduce in the 1970s that dramatically changed telescope accessibility and helped create the modern consumer astronomy market?

Celestron revolutionized amateur astronomy in the 1970s with its groundbreaking product design and marketing approach. The company transformed telescopes from complex scientific instruments into accessible consumer products, opening up stargazing to millions of enthusiasts. This poll tests your knowledge of how innovative product design decisions shaped the modern astronomy retail market and influenced an entire industry.

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Schmidt-Cassegrain optical design that allowed for compact, portable telescopes with high magnification
Digital star-finding technology with computerized object location
Smartphone integration for astrophotography and social sharing
Subscription-based model with monthly sky maps and guided tours