One of 19 photographs from the Royal Observatory, Cape of Good Hope, South Africa showing the monument marking the site of Sir John Herschel's (1792-1871) 20 foot reflector telescope at Feldhausen, Claremont, South Africa, built by Herschel and his father. Sir John Herschel was the son of Sir William Herschel (1738-1822), who discovered the planet Uranus. Herschel followed his father in astronomical research, mapping the sky of the southern hemisphere and cataloguing many previously unseen stars. Herschel discovered 525 nebulae and clusters.
© Science Museum / Science & Society Picture Library