Monday, January 28, 2013
Roberts was a pioneering astrophotographer of nebulae. His picture of what at the time was called the Andromeda nebula (now known as the galaxy Andromeda) was the first to show its spiral nature. At the time it was not known that there were other galaxies besides our own. It was not till 1924 that Edmund Hubble determined that the universe went beyond the Milky Way galaxy. In addition to his photography Roberts developed an instrument that engraved stellar images onto copper plates called a stellar pantograver. For his pioneering work in astrophotography he was awarded a gold medal by the Royal Astronomical Society. In 1890 he became a fellow of the Royal Society. In 1892 he received an honorary doctorate from Trinity College, Dublin.
Roberts died on July 17, 1904.
Jones, Bryn; "Isaac Roberts (1829-1904)"; Retrieved from: jonesbryn.plus.com.
R.S.B; "Isaac Roberts. 1829-1904"; Proceedings of the Royal Society of London (1904-1905)75:356-362
Isaac Roberts Wikiepedia Entry