This photograph shows the major internal mechanisms of MISR, assembled ready for testing. At the core of the assembly is a "chassis" called the optical bench, which is built with extremely high mechanical precision for mounting the optical components. The cameras (one is visible, like a canister pointing downwards) are mounted directly on the optical bench. Also shown are the arms carrying the diffusion panels (the panels are visible at the top, one at the front and one at the rear.

NASA Photo ID: AS08-16-2596