Chromosphere, Peter Sedgley (1967; left) and Cercles chromatiques, Gregorio Vardanega (1966-67), both from the exhibition 'Selected works from the MCA collection', guest artist/curator Jacky Redgate, Museum of Contemporary Art, Sydney.

I absolutely loved this room full of constantly changing Op-art. Was fun to plug in the i-pod, press 'Late 60's Floyd' and imagine you were hurtling through a worm-hole while taking recreational psychedelics.