Which telescope brand revolutionized the amateur astronomy market in the 1970s with their 'Schmidt-Cassegrain' design that made compact, portable telescopes with advanced optics widely accessible?

The astronomy industry has seen remarkable product innovations over the decades, particularly in telescope technology. Major brands have continuously pushed the boundaries of what's possible, transforming how both professionals and amateurs observe the cosmos. This poll tests your knowledge about a significant product innovation breakthrough that changed the astronomy market landscape forever.

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Celestron
Meade Instruments
Orion Telescopes
Takahashi