Which telescope design, first mass-marketed in 1970, revolutionized amateur astronomy by making quality stargazing accessible to casual consumers and became one of the best-selling astronomy products of all time?

The intersection of astronomy and retail has produced some of the most innovative consumer products in history. One particular telescope revolutionized the amateur astronomy market, creating a new category of accessible stargazing tools and becoming one of the most recognizable astronomy products ever. Test your knowledge about this famous product that changed how everyday people experience the night sky!

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The Dobsonian Telescope (popularized by John Dobson)
The Schmidt-Cassegrain Telescope (by Celestron)
The Maksutov-Cassegrain Telescope (by Questar)
The Short-Tube Refractor (by Tasco)