HiPERCAM: high time-resolution astrophysics

One of the best ways of studying compact objects in the Universe, such as white dwarfs, neutron stars, black holes and objects in our Solar System, is through their brightness variations. These tend to occur on timescales of seconds and below, and hence requires specialised astronomical instrumentation. In this talk, I shall review the design and scientific highlights of the high-speed camera HiPERCAM, which is now permanently mounted on the world's largest optical telescope - the 10.4m GTC on La Palma.