1-158-592 - Oxford Science Archive/Heritage Images

Dorothea Klumpke Roberts, American mathematician and astronomer, 1903. Roberts (1861-1942) at work on the Carte du Ciel at the Paris Observatory. She is using a plate-measuring microscope to measure positions of star images on photographic plates. She was the first woman to make astronomical observations from a balloon. From La Science Illustree. (Paris, December 1903).