He worked at the Heidelberg-Königstuhl Observatory from 1911 to 1914 while working on his Ph.D. there, which he obtained in 1915. During this time Heidelberg was a center of asteroid discovery, and Kaiser discovered a number of asteroids during his time there.
Archduke Franz Ferdinand Karl Ludwig Joseph Maria von Habsburg-Lothringen was born at Graz on 18 July 1863, son of Karl Ludwig, KaiserFranz Josef's second brother.
Franz Josef may have disliked Franz Ferdinand's marriage, his associates, and his political ideas, but he also realised that the Archduke was a survivor, made strong by his childhood illness, and needed some experience before ascending the thrones of the Dual Monarchy.
Whereas the late Kaiserin Elisabeth was known as the greatest friend of the Magyars and the Kaiser himself was known to be a sympathetic King of Hungary (in spite of his violent crushing of the Hungarian State during the revolution in 1849), Franz Ferdinand was an open and vocal enemy of the Magyars.