Which retail innovation by Celestron in the 1970s revolutionized the amateur astronomy market by making Schmidt-Cassegrain telescopes widely accessible to consumers?

The astronomy retail landscape has dramatically evolved over the past decades, with certain product launches and business innovations transforming how amateur and professional astronomers access equipment. This trivia question explores a pivotal retail innovation that democratized telescope technology and created a new market segment. Test your knowledge of astronomy retail history!

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The C8 mass-produced Schmidt-Cassegrain telescope line that dramatically reduced production costs
The AstroMaster budget refractor series that simplified telescope assembly for beginners
The SkyProdigy computerized telescope system with automated star alignment
The NexStar GPS telescope network that introduced satellite positioning to amateur astronomy