Home-brew beam splitter question.

[P3D Bill Costa - NIS/CIS - University of New Hampshire <Bill.Costa@xxxxxxx>]

    First off, I think I'm using the correct terminology when I say beam
    splitter -- that is a stereo camera that works by using a transparent
    plate to reflecting the image to one camera while allowing the other
    camera to view the subject directly through the plate.  Here's a crude
    ASCII drawing:


                        +-+      /             /       \
                        |A|>   /                subject
                        +-+  /                 \ here  /
                              +-^-+
                              | B |
                              +---+

    My question is, does the plate have to be a `half silvered' mirror, or
    is an ordinary sheet of plate glass sufficient?  (I realize that for
    best results a black box surrounding the glass/camera lens would be
    needed as well, etc. etc.)  Of course if a half silvered mirror is
    needed my next question will be, does anyone know of a good source for
    the appropriate type.  :-)  Thanks in advance....

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