Which two major telescope manufacturers merged in 2019 to form the largest astronomy equipment company in the world?

The astronomy equipment industry has seen several significant corporate mergers over the decades, reshaping how astronomers access quality observation tools. One particular merger created a powerhouse in telescope manufacturing that changed the landscape of consumer astronomy products. Test your knowledge of astronomy business history with this product trivia question about a significant brand merger in the telescope industry.

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Celestron and Orion
Meade Instruments and Celestron
Sky-Watcher and Vixen
Meade Instruments and Ningbo Sunny Electronic Co.