P3D Moon Card

[FGodmom@xxxxxxx]

Hi, this is my first post to the list, so please forgive me if I am asking 
questions that have been discussed ad nauseum.  I tried to access the 
archives at http://www.calcite.rocky.edu/photo-3d/, but I couldn't get them 
to work.

I just saw an eBay auction
(http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=274260286)
that had an interesting hyperstereo view of the moon.  Anyone care to tell me 
how it was done?  My best guess is that the two images were taken at the 
beginning and end of the night or with a three-month separation.

I think this is only the second old-time print I have ever seen that used 
anything other than straightforward stereophotography.  The first (and this 
is only a vague memory) was a double exposure used to create the illusion of 
ghosts.  Anyone else know of other examples?

--John Blackwell