On: Dragonfly: An optical telescope built from an arra...

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Here are some pictures. https://www.dragonflytelescope.org/gallery.html

It uses a raspberry pi for each lens(https://www.raspberrypi.com/news/dragonfly-spectral-line-map...)

Early paper about the telescope. https://ui.adsabs.harvard.edu/abs/2014PASP..126...55A/abstra...