very cool, harry. Would you allow me to add to your post, to clarify for anyone who hasn't had experience with stereographs?
You know those "magic eye"s kids do, to see the hidden 3D picture in the background of a mess of images? Just like 3D movies, that's basically what you're doing here. You don't need special glasses, though, you just sorta blur your eyes and let the two images (which had to have been taken from different, steroscopic perspective, like you do when each of your eyes combines two different images) come together to form a third stereo image. It gives you a sence of depth in the picture, and thus, a sense of 3 dimesions.
Just like the magic eyes, you can start by having your face close to the image, then moving back slowly until they focus and combine. In the end you'll see athird image in stereo that you'll be focused on, sandwiched between two other images you'll be seeing with your peripheral vison.
The best tip I can give you from learning how to do this myself: Start small. The larger the image, the harder it is to do. So maybe save this image and scale it down, then once you get the hang of seeing stereo images, you can do it with progressively larger images. Truly a wonderful experience!
fourmilab has all of it's "solar system live" diagrams available in stereo, and it has a great step-by-steper to help you get started if you need extra help.
http://www.fourmilab.ch/solar/help/stereo.html for details...
Have fun!!!!