What is CTA and how will it work? This video produced by CTA Consortium member Deutsches Elektronen-Synchrotron (DESY) explains how CTA will look at the sky in higher energy photons than ever measured before and give a behind the scenes look at the construction of a prototype of one of the proposed telescopes, the Medium-Size Telescope.

Credits: DESY/Milde Science Comm./Exozet