Berlin Observatory
The construction of the new Berlin Observatory proceeded from a cabinet order of 10 November 1830 according to the design of Schinkel. An approximately one hectare plot was acquired at a price of 15,000 Thalers in the present-day area of Berlin-Kreuzberg. The foundation stone was laid on 22 October 1832 and the observatory was ready by 1835, on the area currently bounded by the streets ″Friedrichstraße″, ″Besselstraße″ and ″Lindenstraße″. The southern end of the ″Charlottenstraße″ was later named ″Enckeplatz″ in honor of the director at that time and the observatory acquired the address of Enckeplatz 3 A (now: ″Enckestraße 11″).
Mannheim Observatory
The running of the Mannheim Observatory by Catholic Orders was now over. In the years up to the Baden Revolution in 1848 the observatory declined. Famous astronomers were not retained, such as Heinrich Christian Schumacher (Director 1813-1815), founder of the oldest existing journal of astronomy, "Astronomische Nachrichten", and of the Altona Observatory. Friedrich Wilhelm Struve, founder and first director of Pulkovo Observatory at St. Petersburg, despite being interested was deterred by clumsy personnel policy. From 1816 until his death in 1846 Bernhard Nicolai was Court Astronomer, being mainly dedicated to the orbits of comets. In his time, amongst other things, a three-stage refracting telescope was purchased from Fraunhofer, which was later used by the German expeditions of 1874 and 1882 to observe the Transit of Venus.