Rudolf ceded the crown of Bohemia, as well, to his brother. Death Rudolf died in 1612, nine months after he had been stripped of all effective power by his younger brother, except the empty title of Holy Roman Emperor, to which Matthias was elected five months later. In May 1618 with the event known as the Defenestration of Prague, the Protestant Bohemians, in defence of the rights granted them in the Letter of Majesty, threw imperial officials out of the window and thus the Thirty Years' War (1618–1648) started. Art collecting and patronage Rudolf moved the Habsburg capital from Vienna to Prague in 1583. Rudolf loved collecting paintings, and was often reported to sit and stare in rapture at a new work for hours on end. He spared no expense in acquiring great past masterworks, such as those of Dürer and Brueghel. He was also patron to some of the best contemporary artists, who mainly produced new works in the Northern Mannerist style, such as Bartholomeus Spranger, Hans von Aachen, Giambologna, Giuseppe Arcimboldo, Aegidius Sadeler, Roelant Savery, Joris Hoefnagel and Adrian de Vries, as well as commissioning works from Italians like Veronese. Rudolf's collections were the most impressive in the Europe of his day, and the greatest collection of Northern Mannerist art ever assembled. The adjective Rudolfine, as in "Rudolfine Mannerism" is often used in art history to describe the style of the art he patronized. His love of collecting went far beyond paintings and sculptures. He commissioned decorative objects of all kinds and in particular mechanical moving devices. Ceremonial swords and musical instruments, clocks, water works, astrolabes, compasses, telescopes and other scientific instruments, were all produced for him by some of the best craftsmen in Europe. He patronized natural philosophers such as the botanist Charles de l'Ecluse, and the astronomers Tycho Brahe and Johannes Kepler both attended his court. Tycho Brahe developed the Rudolphine Tables (finished by Kepler, after Brahe's death), the first comprehensive table of data of the movements of the planets. As mentioned before, Rudolf also attracted some of the best scientific instrument makers of the time, such as Jost Bürgi, Erasmus Habermel and Hans Christoph Schissler. They had direct contact with the court astronomers and, through the financial support of the court, they were economically independent to develop scientific instruments and manufacturing techniques. The poet Elizabeth Jane Weston, a writer of Renaissance Latin poetry, was also