Stand on a cliff of the right height in relation to the horizon. Using sensitively tuned equipment, look out to see a past resonating off the ocean (past-present interferometry).
Sea-cliff interferometry, Te Ahua Point, 20190131 (2019)
Other works by The observatory project
The observatory project
Backscatter interferometry, Piha Radar station, 20190131 (2019)
Instructions for mapping atmospheric conditions.
The observatory project
Super-tangential interferometry, IRASR, 20190131 (2019)
The artists climb a thirty metre radio antenna and make observations.