Patrick, These comments are directed toward the very slight, if any, stereo effect achieved in the paired images you posted of the Moon. They have nothing to do with showing the parallax of the Moon against the star field background. The failure to perceive a stereo view in these images from SPOC & Hawaii could be due to two factors: l. The very small viewing angle between the two images is equivalent to viewing a 13 cm ball from about 5.3 meters - a difficult situation at best to perceive the ball's convex surface. 2. Possible misorientation of the paired images with respect to the plane defined by SPOC, Hawaii, and the Moon. Imagine a line across each image that lies in this plane at the time the pictures were taken. The images must then be placed in the paired image so these two lines are parallel and actually horizontal. I've examined the paired images carefully, and I cannot detect a difference in the images in any direction, so I cannot tell if the images are oriented correctly or not. It may be that the stereo effect is so minute as to be unnoticeable. An obvious way to get a stereo pair is to find, or shoot, two images of the "full" Moon that show the extremes that allow us to see slightly more than exactly 1/2 the surface of the Moon. Properly oriented and paired, those two images would make a distinct stereo image of the Moon. Ed Stimpson --------------------------------- Quoting Patrick Wiggins <paw@wirelessbeehive.com>:
I forgot to mention that sometimes when I use the cross eye method to view the pairs one pair makes the Moon look like a sphere sticking out towards me while the other pair has the Moon looking like a concave dish.
Anyone else seeing that?
Apparently any 3D effect is an illusion as I get the same thing when looking cross eyed at two copies of the same image.
patrick