27 August 1976
Vol 193, Issue 4255

About The Cover

Pictures, obtained by camera 1 (left) and camera 2 (right), 0.822 meter apart, provide stereo coverage of about 45 degrees in front of Viking 1 lander. The remainder of the camera 2 picture is included for its geological interest. Both images were computer-rectified to be equivalent to pictures obtained with conventional film-plane cameras. The stereo effect may be viewed by those with average interocular distances with any standard pocket stereo viewer. The apparent downward convexity toward the viewer in the foreground is a camera artifact. See page 791. [Jet Propulsion Laboratory, Pasadena, California]