Get out your red and blue glasses and have a look at this image! Put them on so the red lens is over the right eye. If you don't have a pair, every person who signs up to be a registered Compass user receives a free pair. You can also purchase them separately separately.

This image shows the middle of Lechuguilla Cave from the northeast. You should see a large mass of passages coming out of the screen in the lower left. This is Far East section of Lechuguilla. The Riff is the horizontal segment in the middle of the screen and the entrance passage is in the upper right corner. Some people find it takes a few minutes of looking at the image before you see the full effect. Also, the more you practice, the better you get..

COMPASS allows you to optimize the stereo image in several ways: COMPASS allows you to control stereo image for maximum effect. This dialog box is used to set stereo options:

• The color selection box allows you to match the plot line color to the lenses. This is important because if the line colors don't match the lens color, you get ghost images that can make the stereo effect difficult to see. You can also swap eye colors. This is useful if you are left eye dominate.
• The "Inter-View" angle controls the stereo effect. The larger the number, the more 3D the image will appear. However, if the number is too large, your eyes will be unable toconverge the image.
• The "Zoom Correction" option compensates for a problem that occurs when your zoom in on a large cave in stereo. Normally, as you zoom in, the stereo effect would get stronger and stronger until your eyes would no longer be able to converge the image. This makes it difficult to pan zoom and rotate the image without stopping to refocus your eyes. The "Zoom Compensation" mode maintains a constant stereo effect as you zoom through a cave. This makes it easy to maintain the stereo effect while you explore the cave image.