Which marketing innovation by Celestron in the 1970s revolutionized the telescope market and significantly expanded amateur astronomy?

The astronomy retail market has seen remarkable innovations in product marketing over the decades. One particular brand made history with a revolutionary approach that changed how astronomy products were marketed to amateur stargazers. Test your knowledge of astronomy retail history and the marketing strategies that helped democratize stargazing for the masses.

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The 'Stars in Your Hands' campaign that introduced the first mass-produced Schmidt-Cassegrain telescope at consumer-accessible prices
The 'Astronomy for Everyone' initiative that bundled free star charts and astronomy software with every telescope purchase
The celebrity endorsement program featuring Carl Sagan as the first astronomy product influencer
The telescope rental program allowing customers to 'try before you buy' at local astronomy clubs