posted on Mar, 24 2011 @ 11:45 AM
reply to post by scottlpool2003
is a bad reproduction of the first image ever successfully transmitted from the surface of Mars. My parents were at JPL early on the
morning of July 20, 1976 when this image was received from the Viking 1 lander.
Because of the low transmission rate, the lander did not have traditional TV cameras. Rather, it had
that were the grandfathers of today's digital cameras. The turret would
take a verticle scan, turn slightly, and do another vertical scan, and so on. The pictures displayed in real-time (ok, ok... with a ~20 minute
) as each line was received. The image built-up on the monitor from left-to-right, vertical line by vertical line, It
could take a minute or more to complete an image, depending on the size of the scan.
Viking soft-landed using rockets, and started transmitting as soon as it touched-down. Thus, when it started scanning the air was clear and the image
bright. Then the dust-plume obscurred the sun, causing the dark lines of the scan, then the air slowly cleared and the scene brightened.
Hope this helps.