Which groundbreaking Celestron telescope product and accompanying marketing strategy in the 1970s revolutionized amateur astronomy by making high-quality observations accessible to the mass market?

In the competitive world of astronomy retail, certain products and marketing strategies have revolutionized how amateur astronomers access the cosmos. This poll explores how Celestron, one of astronomy's most recognizable brands, transformed from a small operation to a market leader through a pivotal product and marketing strategy in the 1970s that democratized serious astronomy for hobbyists worldwide.

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The Celestron C8 Schmidt-Cassegrain telescope marketed as 'Observatory Performance for Everyone' with innovative mass production techniques
The Celestron FirstScope marketed with NASA partnership branding and Apollo mission imagery
The Celestron PowerSeeker series with its 'Astronomy for Beginners' campaign featuring celebrity astronomer endorsements
The Celestron NexStar computerized telescope with the 'Touch the Stars' campaign highlighting its revolutionary tracking technology