QUESTION: On NASA TV I saw the ability of the Virtual Reality Team programs to generate 3D models of Mars surface by using the Stereoscopic ability of the camera. However they pointed they had a constraint about the range of the 3D model of about 10 or 15 meters, I presume due to difficulty to resolve any angle changes from the pixels since the stereoscopic camera is only a few inches apart. However, couldn't you extend the range by a factor of 10 or so by using the panorama pictures taken from the camera when it was low in the ground on the first days or so from the landing? This will increase the stereoscopic distance of the camara from a few inches to several feet. I realize that there would be some shadow (indeterminate) areas due to the difference in horizon range due to height. But still this would permit to precisely range rocks from much farther away. ANSWER from David Mittman on July 25, 1997: Thanks for the question. I'm not on the AMES virtual reality team, but I can address part of your question. Early on in the mission we realized that the camera may not survive the deployment action due to any number of factors. At that time we planned to take an "insurance" panorama from the low mast position to hedge against the possibility of camera loss. Vertical stereo is not directly usable by the rover navigation team, but teams from AMES and the USGS both suggested that the insurance panorama would be useful in developing terrain maps. This insurance panorama is now being received and will be used to process "vertical stereo".