Atlas Eclipticalis

Composition for 7 slide Projectors based on John Cage’s Atlas Eclipticalis.
Compositon assistance: Ephraim Wegner / Programming assistance: Martin Nawrath
7 slide projectors, 300 slides, starmap, light-colored filters, microcontroller.
Duration: 08’35”

Like John Cage’s piece “Atlas Eclipticalis”, this installation is based on a Antonín Becv̌ ár star map. Cage lay a score on top of the map and drew in dots where the stars were. As such the dots became notes, whose values were defined according to the intensity of the starlight. Using the same procedure, this piece translates a star chart from Becv̌ ár’̌s Atlas into a light composition for slide projectors, where the size, color-temperature and brightness of the stars are interpreted by seven projectors. An extract of table XVII from “Atlas Eclipticalis” with the constellation Cetus (whale) is played.

Conceived for the Acht Brücken Musik für Köln: John Cage in cooperation with the Academy of Media Arts Köln (KHM).

score | video
John Cage’s Score (sketch) for Atlas Eclipticalis