Camera Lucida is an immersive spatial art work creating a fleeting ephemeral materiality by intersecting ultrasound with hyper light, in essence creating an unstable sonic aurora. Developed in collaboration with numerous physics research labs the ‘observatory’, a transparent gas-filled chamber, converts sound waves into visible light by employing a phenomenon known as sonoluminescence. The Camera Lucida: Sonochemical Observatory creates a rare opportunity, as a powerful aural and visual experience, to encounter this volatile phenomenon outside the confines of highly specialised sonochemical laboratories. The immediacy of this experience allows the viewer/listener to transcend the illusory distinction between scientific discovery and perceptual cognition.