Which innovative marketing approach did Celestron pioneer in the 1970s that revolutionized how telescopes were sold to amateur astronomers?

In the competitive world of astronomy equipment, product innovation and marketing strategies have shaped how we explore the night sky. Celestron, one of the industry's most recognized brands, revolutionized amateur astronomy with technological advancements that made stargazing more accessible. This poll tests your knowledge of a pivotal moment in astronomy product marketing that changed how telescopes were sold to the public.

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The introduction of 'Star Parties' - organized nighttime demonstrations where potential customers could test telescopes before purchasing
The 'Astronomy at Home' program that offered in-home setup and personalized training with each high-end telescope purchase
The 'Celestial Guarantee' - a money-back promise if customers couldn't view at least 50 celestial objects in their first month
The 'Observatory Membership' loyalty program that gave telescope buyers exclusive access to professional observatories