richr@ai.etl.army.mil (Richard Rosenthal) (03/17/89)
(I hope a copy of this makes it to the people at NASA involved in the space shuttle program.) Yesterday afternoon (Thursday, March 16) I tuned in on the local cable system to the NASA TV network to check out the action from the shuttle. What I saw was a replay of a tape recorded from a TV camera on the shuttle pointing straight down at the Earth's surface. The picture of the Earth's surface moved from left to right across the TV. The pictures had lots of clouds in them. I thought ... "Clouds are up to 4 miles above the ground. So, I guess there must be some relative motion between the cloud tops and the ground surface on this TV picture." Then I realized Super Bowl halftime!!! I found a cheap pair of sun glasses and covered just my right eye, and Great 3D pictures of cloud patterns zooming by from my personal out the window view from the space shuttle. Hey, NASA it was wonderful. Next time just hype the show for 2 weeks ahead of time. Set up a promo to give away 3D glasses. :-) Thanks for the show!!! -Rich -- Richard Rosenthal Internet: richr@ai.etl.army.mil Engineer Topographic Labs UUCP: ...!ames!ai.etl.army.mil!richr Ft. Belvoir, VA 22060-5546 BITNET: richr%ai.etl.army.mil@CUNYVM +1 202 355 3653 CSNET: richr%ai.etl.army.mil@RELAY.CS.NET
lmeyer@well.UUCP (lhary meyer) (03/19/89)
The Half Time 3D trick used the PULFRICH efect, (look it up in the perceptual physiology textbooks). The relative motion from a satellite makes nice stereopairs if the spacing is right. Years ago NASA made a stereo movie of mars from the Mariner orbiter that way.