William Herschel Discoverer of the Deep Sky

The observational work of William and Caroline Herschel highlights their significant contributions to astronomy between 1774 and 1817, particularly through the discovery of deep-sky objects. William's monumental sweep campaign led to the publication of 2,500 objects across three catalogues, while also yielding the discovery of Uranus in 1781. Beyond observation, William built large reflectors and developed innovative methods, contemplating the nature and evolution of cosmic objects. His legacy continued through his son, John, marking a profound impact on the field.