Which retail product design innovation first allowed amateur astronomers to replace traditional eyepieces with digital camera sensors for real-time astronomical viewing?

The astronomy industry has seen remarkable product innovations in recent decades, revolutionizing how both professionals and amateurs observe the cosmos. From traditional telescopes to sophisticated digital imaging systems, the retail landscape of astronomy equipment has evolved dramatically. This poll tests your knowledge about a significant retail design innovation that changed how astronomy enthusiasts interact with the night sky.

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Celestron's NexImage system (1998)
Meade's Electronic Eyepiece (1989)
Mallincam's Video Astronomy System (2005)
Orion's StarShoot AutoGuider (2001)