3 D Pictures
Date: 1999 - 2000
If we can set up two orbiting telescopes in pairs far
enough apart around the earth to take 3-D pictures of heavenly bodies.
Could this make history for the most spectacular 3-D astronomical images
to be ever taken?
They'd have to be REALLY far apart. Nice 3-D images of the moon have been
taken by photographing the moon near moonrise and moonset; the spatial
separation between exposures was provided by the diameter of the earth.
The best separation we could get for an orbiting or earth-based camera
would be to take pictures six months apart, giving a separation of some 186
million miles. Even then, only the very nearest stars would show any
parallax change, and all the rest would look identically far away, as they
do to the naked eye.
Richard Barrans Jr., Ph.D.
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Update: June 2012