Arthur Long was born in Coleraine, County Londonderry and was educated at Coleraine Model School. He emigrated to South Africa and worked for a leather merchant. He took up the study of astronomy in 1910 and two years later was one of the founders of the Cape Astronomical Association, serving as its president from 1919 to 1921. This association combined with the Johannesburg Astronomical association to form the Astronomical Society of South Africa. In 1921 he was elected Fellow of the Royal Astronomical Association. He wrote articles for the Cape Times and was active as a lecturer and demonstrator. He was the first astronomer to map the southern sky, and in 1922 published a star atlas for the southern hemisphere. His special interest was variable stars.

Born:	1874
Died: