Von Heyl's challenge in translating her drawing on site at this monumental scale (17 x 67 feet) was to reinvent each gesture with
equal degrees of precision and liveliness (the painting process did not allow for mistakes or revisions) in order to keep the overall image, rhythm, and freshness of her original sketch.
On the one hand, the reflector surfaces are rigorously controlled and on the other, the antennas can be moved and pointed with an angular
precision of 0.6 arcseconds (an arcsecond is
equal to 1/3, 600 parts
of a
degree), enough to distinguish a golf ball at a distance
of 15 kilometers.