Which innovative brand strategy did Celestron implement in the 1970s that revolutionized how telescopes were marketed to amateur astronomers?

The astronomy product market has seen remarkable innovations in marketing and brand strategy over the decades. Major telescope manufacturers have employed various tactics to differentiate themselves in a competitive field. This trivia question focuses on a pivotal moment in astronomy retail history that changed how telescopes were marketed to amateur astronomers and helped democratize stargazing. Test your knowledge of astronomy product history!

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The 'Star Parties' program where potential customers could test telescopes at organized nighttime viewing events before purchasing
The 'Cosmic Financing' plan that allowed customers to pay for premium telescopes in monthly installments tied to lunar cycles
The 'Celestial Certification' program that offered free astronomy courses with the purchase of their advanced telescope models
The 'Observatory Partnership' where customers who purchased high-end telescopes received partial ownership in a professional observatory