Two of the cameras on NASA’s next planned Mars rover, the Mars Science Laboratory (MSL), will be supplied with Alliance Spacesystems mechanisms. Malin Space Science Systems’ Mast Camera (Mastcam) and the Mars Hand-Lens Imager (MAHLI) will use zoom, focus, filter wheel and cover mechanisms designed and produced by Alliance.  The Mastcam is a high-resolution stereo color camera with a zoom telephoto lens.  Its tasks include obtaining color, multispectral color, stereo, and high-definition video views of the Martian terrain. Plans call for two Mastcams to be flown to provide stereoscopic views. MAHLI, mounted to the rover’s sample acquisition arm, is designed to closely examine rocks, soils, and if present, ice, to reveal details smaller than the width of a human hair.