The Stockholm Observatory dates back to the 18th century, when it was established on a hill outside of the city that is now considered central Stockholm. In the 1930s, astronomers moved even further to a peninsula on the Baltic Sea called Saltsjöbaden. The observatory was funded by a donation from the Wallenberg family, which allowed for a much bigger building and instruments, launching Swedish astronomy to the forefront. The crown jewels of the observatory were a 40-inch (102-centimeter) Grubb reflector and a 24/20-inch Grubb double refractor. The former was one of the…
