Stereo - Alnitak, the Horsehead and Flame Nebulae. Originally captured Feb. 18/07 with a Borg 101ED apo.
In order to view this as a single stereo image, you must stare at the center, relax your eyes, allow them to become cross-eyed, until you see the combined image appear. It takes some practice, but the effect is impressive.
Viewing in this 3-D manner may cause headache, nausea, and/or eye discomfort,
so do not view in this way if you are prone to these problems.