Which innovative marketing approach did Celestron use when launching their revolutionary EdgeHD telescope technology in 2009?

The astronomy industry has seen remarkable product innovations over the decades, transforming from simple optical devices to sophisticated instruments that capture the wonders of the cosmos. Major manufacturers have employed various marketing strategies to distinguish their telescopes and related equipment in an increasingly competitive market. This trivia question explores how a groundbreaking product innovation was introduced to the astronomy consumer market.

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They offered a "Star Guarantee" program allowing customers to return the telescope if they couldn't see specific celestial objects within 90 days
They created an augmented reality app that showed potential buyers exactly how deep space objects would appear through their specific telescope model
They launched a global "Dark Sky Initiative" where a percentage of each purchase funded light pollution reduction efforts
They pioneered a subscription model where customers received quarterly optical upgrades and accessories with their telescope purchase