A prototype being built for the upcoming Cherenkov Telescope Array (CTA) during a beautiful sunset. The ladder is a bit taller then a one story building for scale. : r/Astronomy
DESY inaugurates prototype for the Cherenkov Telescope Array – CERN Courier
The first Large-Sized Telescope of the Cherenkov Telescope Array Inaugurated | ISEE - Institute for Space-Earth Environmental Research
Cherenkov Telescope Array - CTA - Department of Physics