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The Dragonfly Telephoto Array is an array of 48 14-cm optical telescopes (actually commercially-produced cameras with telephoto lenses), a project of the University of Toronto, physically located at the New Mexico Skies observatory in New Mexico. The field of view of each is about six square degrees, and I presume they are pointed as identically as is practical. As a telescope, it has a large collecting area (currently roughly equivalent to a 1-meter aperture), giving it sensitivity for imaging very-large-scale diffuse extended sources, such as ultra diffuse galaxies. It began operation c2013 with 8 such cameras mounted together in a tight cluster, and now consists of two such clusters of 24 cameras each.
An unrelated Dragonfly is the planned Dragonfly space mission to Saturn's moon, Titan.