Which marketing strategy helped Celestron significantly increase their market share among amateur astronomers in 2018-2019?

The astronomy retail market has evolved dramatically in the past decade, with specialized telescopes, astrophotography equipment, and celestial observation tools becoming more accessible to consumers. Companies in this niche have had to develop unique marketing approaches to reach their target audience. This poll tests your knowledge about a groundbreaking marketing strategy that transformed the consumer telescope market.

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Their 'Stars in Reach' campaign that offered monthly payment plans with no interest for premium telescopes
Their mobile app integration that allowed customers to preview what celestial objects would look like through specific telescope models before purchasing
Their limited edition NASA partnership telescopes commemorating the 50th anniversary of the moon landing
Their 'Trade-Up' program allowing customers to return used telescopes for credit toward more advanced models