I think the Dragonfly telescope array is based on a virtual telescope.
In 2012 they started with 3 lens (Canon 400mm f2.8) and by 2014 went to 8 lens and now they have a 48 lens array. Each lens gathering data of the same subject.
It has been very successful for finding very faint objects, having found previously unknown dwarf galaxies.
The benefits must come from stacking, if you tracked an object for 6 hours, you would stack 6 hours x 48 lens = 288 hours of data to stack.
EDIT: Link with photos here
http://www.dunlap.utoronto.ca/instru...ion/dragonfly/
Cheers
Bill