P3D Re: lunar hyper-stereo?

[aifxtony@xxxxxxx (Tony Alderson)]

>The way to do it is to shoot the moon at moonrise then again at moonset on
>the same night.

Well, this is certainly the easiest way to do it. But Charles Piper in "The
Technical Page" worked out a method of using the libration of the moon
because:

"...the really interesting detail on the moon is visible only near the
terminator...and this cannot be photographed by the sunset to sunrise
method...the terminator moves enough in a half hour to begin interfering
with stereo fusion..."

Anyway, Charlie worked out a method to find stereo pairs within two to six
month intervals, using the apparent wobble of the moon in it's orbit. (The
moon does not present exactly the same face to us all the time; we can see
a little bit around the edges.)  This required some extensive consultation
of published astronomical tables.

This might be in the "3D News" archive on the Stereo Club of Southern
California website, or you can still purchase a spiral-bound compilation of
"The Technical Page" from Mr. Piper.

Another way is to fake the stereo in the computer... pretty good moon maps
are available from the US Govt; if you' re willing to do a little(!) work,
why you can make a pretty good moon model in your computer and render a
stereo!  It'll take less than six months, and you won't have to get up at 4
AM. Of course, this assumes you've already bought a bunch of hardware and
software for other reasons... ;-)

Tony Alderson
aifxtony@xxxxxxx



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