Berlin in 1896 as his successor. In the following year he achieved in making the institute fully independent of the observatory. In 1912 it moved into a new building in Berlin-Lichterfelde. In 1944 it was placed under the control of the Navy and transferred to Sermuth in Saxony to avoid the bombing. After the Second World War the greater part was brought to Heidelberg in 1945. Only a small remaining section returned to the observatory, which by now had moved to Potsdam-Babelsberg and it was again incorporated in 1956. Because Foerster was not a member of the Academy, the Observatory was separated from the Academy in 1889 and affiliated to the Berlin University. The original Academy Observatory had already been used by the University since the founding of Berlin University in 1809. In 1890 Friedrich Simon Archenhold became a worker at the Observatory and erected on the instructions of Foerster a photographic outpost on the Halensee in Grunewald for the photographing of nebulae. At the end of the 19th century, the rapid growth of Berlin led to the fact that the Observatory which was once on the edge of the city was now fully surrounded by buildings, and therefore observational activities were nearly impossible to a level required for research. In the middle of the 1890s Wilhelm Foerster and others proposed the building of a new observatory outside of the metropolitan area. In 1904 Hermann von Struve took over the directorate of the observatory. Under his leadership research was considerably extended and the project of yet another move took on concrete form. After test observations in the surrounding area starting from June 1906 by Paul Guthnick, who had been active at the observatory as Observator since 1906 following on from his training as an assistant at the observatory from 1901 to 1903, the decision made by the Kultusministeriums fell in favor of his recommended location in the Schlosspark Babelsberg in Potsdam. The location given up on the Lindenstraße was listed by the International Astronomical Union (IAU) under their observatory codes as 548. A few of the observational instruments went to the new location: a new 30 cm refractor von Zeiss-Repsold, a meridian circle from Pistor & Martins dating from 1868 with 19 cm aperture and 2.6 m focal length, a 6 Zoll (inch) refractor from and a Zoll refractor from Merz & Mahler. After the demolition of the building itself,