John Herschel was a prominent British astronomer, mathematician, and photographer born on March 7, 1792. He was the son of the famous astronomer William Herschel, known for discovering the planet Uranus. John made significant contributions to astronomy, including the cataloging of over 500 double stars and the discovery of several nebulae. In addition to his work in astronomy, Herschel was a pioneer in the field of photography. He invented the cyanotype process, which produced blueprints, and made advancements in photographic techniques. His diverse interests and achievements have left a lasting impact on both science and photography.