Which product development innovation by Celestron in the 1970s revolutionized the consumer telescope market by making advanced astronomy accessible to amateurs?

The astronomy industry has seen remarkable product innovations that have revolutionized how we observe and understand the cosmos. From amateur stargazers to professional astrophysicists, these developments have transformed accessibility and capabilities in space exploration. This trivia question focuses on a landmark product development decision that changed the trajectory of consumer astronomy equipment. Test your knowledge about the business decisions behind the stars!

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The Schmidt-Cassegrain C8 telescope design that combined portability with professional-grade optics
The first computerized star-tracking mount system that automatically located celestial objects
The introduction of smartphone-compatible eyepieces for astrophotography
The development of carbon fiber telescope tubes that reduced weight by 75%