Which innovative retail strategy did Celestron implement in 2015 that dramatically increased their market share in the amateur astronomy equipment industry?

Celestron is one of the most recognized brands in amateur astronomy equipment, but their retail strategy evolution has been as interesting as the celestial bodies their products help observe. This trivia question explores how this iconic astronomy brand revolutionized its product distribution model to become more accessible to astronomy enthusiasts worldwide.

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They introduced a 'try before you buy' program allowing customers to test telescopes for 30 days before purchasing
They launched an omnichannel distribution model with augmented reality star-viewing simulations in physical stores
They switched to exclusively direct-to-consumer sales, eliminating all retail partnerships
They pioneered a subscription-based telescope rental service with quarterly equipment upgrades