10056 · skyspace · luminosity threshold
Skyoculus
Lie back beneath a dark chamber and look up through an oculus at a plane of sky. A slow chromatic arc drives its luminance across a threshold until the opening stops reading as a hole to the sky and becomes a solid, self-luminous panel hovering just above you.
Exhale to dilate the oculus and push the sky toward the threshold; tilt the phone up (or drag upward) to look further into it. With no mic and no touch it self-demos — a ~0.15 Hz breath, a slow gaze drift, and an autonomous colour arc that crosses the flip on its own.
after Turrell · Duay & Nagai
The hidden cove light shifts the chamber toward the opponent of the sky so the aperture's colour is exaggerated — Turrell's trick for making sky flatten into surface. The luminosity threshold is the luminance boundary where a patch stops reading as an illuminated surface and reads as self-luminous; here the eight-partial inharmonic drone opens its spectrum at the same moment the light does.