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Photographischer Refraktor

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The massive red brick building before you is a testament to the power of scientific curiosity. The Photographischer Refraktor, a double telescope built in 1899, is a vital part of the history of astronomy, as well as astrophysics. It was designed specifically for taking pictures of the cosmos and features a large, 80-centimeter lens that was meant for photography and a 50-centimeter lens for visual observation. It was a revolutionary design that would help astronomers study the nature of stars and the processes happening within them. One of the most famous discoveries made with this telescope is the interstellar medium, a space filled with dust and gas that lies between stars. This discovery, along with the Hartmann test, a method to measure the quality of optics, was achieved by Johannes Franz Hartmann, a German astronomer, in 1904. While the telescope suffered damage during World War II, it was restored in the 1950s. The Photographischer Refraktor was fully renovated and reopened as a public monument in 2006 after extensive refurbishment. You can visit the iconic telescope today in the Albert Einstein Science Park, where it stands as a symbol of scientific ingenuity.

The story of Photographischer Refraktor in Potsdam is just one of many fascinating insights you can discover with Explory. To experience the city beyond its surface, you need more than just a map – you need a smart guide that reveals the background, the culture, and the character of each place. With Explory’s city guide, you can dive deeper into Potsdam and transform your visit into a unique city tour filled with stories that bring history and everyday life to light. Explory connects you with Potsdam in a new way. Our guide doesn’t just show you where to go – it enriches your journey with context and atmosphere. Through carefully designed routes and storytelling, you’ll uncover hidden gems and unexpected highlights that even locals might miss. The audio guide makes the city come alive, allowing you to listen while you walk and explore at your own pace. Our city guide is ideal for travelers who want more than sightseeing. Whether your interest is culture, architecture, or local traditions, Explory enables authentic exploration. Each city tour is flexible and intuitive, helping you experience Potsdam with freedom while still being guided by expert knowledge. By combining narrative, navigation, and discovery, Explory ensures your trip becomes an adventure filled with hidden gems and lasting impressions. Take the next step and download the Explory App today. Inside, you’ll find over 300 cities and more than 500,000 POIs and stories to explore. Whether you’re searching for a reliable guide, want to try an immersive audio guide, or plan a memorable city tour, Explory is your all-in-one companion. Begin your journey now and uncover the true essence of Potsdam – only with Explory.

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