Which innovative product design feature did Celestron introduce in 1970 that revolutionized amateur astronomy and became their signature marketing slogan?

Celestron is one of the world's leading telescope manufacturers that revolutionized astronomy for amateur stargazers. Their product design and marketing approach helped democratize astronomy and bring the wonders of the cosmos to everyday enthusiasts. Test your knowledge about how this innovative company changed the astronomy retail landscape through their groundbreaking product design and marketing strategies.

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"Stars in Your Eyes" - Adjustable eyepiece technology
"Bringing the Universe to You" - Schmidt-Cassegrain compact folded-path optics
"Reach for the Stars" - Motorized star-tracking system
"Astronomy Without Limits" - Computer-guided object location