Helio_

(2017)

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  1. Programmed and projected live representation of the natural optical phenomena; halo, reacting to audio.

2. Sun, 22┬░ halo, parhelion, sun pillar, 60┬░halo, parhelic arc and upper tangent arc.

Further reading: http://hyperphysics.phy-astr.gsu.edu/hbase/atmos/halo.html#c1