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WIP
As a field research assignment, we are collaborating with the Dwingeloo Radio Observatory, which consists of a 25m dish in diameter. The observatory works in radio astronomy, where space is studied, mapped, and used as a field for communication. The moon is often used as a reflector for radio amateurs to bounce radio signals off, so they can reach other distant dishes.
While looking at the available data published by the observatory on their website, I took a particular interest in the visual aspect of waterfall data, which is a visual representation of the intensity of different frequencies through time captured by the dish. I translated those graphics into usable data that could be sent in real-time to an Arduino.
Coming back to the observatory and talking to the volunteers resulted in interesting creative conversations on how to orient the translated data into the medium of water. The idea evolved a bit but stayed focused on EME signals captured from the moon, which consist of 1-minute transmissions from radio amateurs communicating and sharing reports of each other’s signal quality. The idea that those communications are open to decode by any dish when pointed at the moon and listening to the right frequency made a connection to eavesdropping. My first prototype now consists of a dish-like metal fountain that coincidentally follows the same design principles as a Cassegrain dish. The data of these transmissions are translated into different water dispensers.
: audio recordings given to me of those EME communication signals
: arduino, metal, water pumps, WSJT-X
https://www.camras.nl/
http://websdr.camras.nl:8901/