Which telescope product development innovation in the 1970s is credited with dramatically expanding the consumer astronomy market by making quality telescopes more affordable and portable?

The astronomy industry has seen remarkable product innovations that transformed both professional research and amateur stargazing. This poll explores a pivotal moment in telescope product development that revolutionized the consumer astronomy market and made space observation more accessible to everyday enthusiasts. Test your knowledge about how product innovation in astronomy equipment changed the retail landscape forever!

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The Schmidt-Cassegrain telescope design by Celestron
Meade's first mass-produced refractor telescopes
Dobsonian-mounted reflector telescopes
The introduction of computerized GoTo mounts