Which telescope design innovation dramatically improved the amateur astronomy customer experience in the 1970s by eliminating complex alignment procedures?

Modern astronomy has been transformed by innovative telescope designs that revolutionized the customer experience for both professional and amateur astronomers. This poll explores how one particular product development breakthrough changed the retail landscape of astronomy equipment and made stargazing more accessible to the general public.

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Schmidt-Cassegrain 'fork mount' design with computerized tracking
The Dobsonian telescope with its simple altitude-azimuth mount
Maksutov-Cassegrain compact travel telescopes
Apochromatic refractor telescopes with ED glass