Herschel, the first to properly map the southern hemisphere stars, also gave the world clear photographic terminology and a number of significant processes. His father William and aunt Caroline were both important influences. He studied alongside Babbage (a close friend and fellow-worker for life), Peacock and Whewell. Darwin, Sedgwick, Lyell and Cameron were all good friends. He showed another friend, Talbot, whom he’d met while both were visiting Fraunhofer, how to fix his pioneering images. Faraday and he, Royal Society colleagues, were warm to one another, while Wollaston helped him find his real métier.