Sol 4206, November 23, 2015. With Opportunity parked at Pvt. Isaac White, the instrument arm swings into action to let scientists study the “workplane.” This is the vertical strip of ground that’s accessible to the arm, which can move only up and down. (To shift it left and right, the rover has to pivot on its wheels.)
The animation above (click to enlarge) shows the approximate area seen in the false-color Pancam at right (Holger Isenberg). The two frames were taken 26 minutes apart, starting about 2 p.m. local time.
Opportunity raw images, its latest mission status, a location map. and atmospheric opacity, known as tau.