I’ve found stereograms entrancing ever since I first managed to “see” one. If you can’t see them, try viewing these images on one of those shiny new LCD monitors and focus on your own reflection. Be sure the monitor is perfectly level, and your head is perfectly vertical. Then use your peripheral vision to search the image for a hint of 3D structure but keep your face in focus. With any luck the image should simply pop into view. (Unless your eyes point in slightly different directions… right?).
These images fascinate me because they’re essentially tricking my binocular vision into hallucinating objects when I look “through” a pattern of (almost) random noise. I used to make my own stereograms using a program called Surface 3D R2 by Andreas Moll (Traxxdale Software) but it no longer seems available so try these two free Win XP programs if you want to do this too.
The background pattern for these two stereograms comes from the Hubble Deep Field image which was developed by some of the oldest light in the universe. They’re puzzles with two-digit answers. Can you solve them?