C.H. I know that with the random-dot stereograms (rds's) you can either "look through" them (long focus) or you can cross your eyes (short focus) each one has its own view. I prefer the long focus so I didn't try crossing my eyes with the mars photos. I'll do that later and see if I can get more overlap. I never had a problem with rds's since I just pick out a recurring smudge pattern in the middle of the poster and overlay it with the adjacent smudge or even two or three smudges away. I remember the first time I did it I was stunned. That was back when everyone was passing around the black and white mottled looking paper that was copied for about the 50th time. One of my machining magazines shows some cool camera mounts for doing stereo photography. Facinating stuff. The brain sure loves to apply depth whenever it can. It's comfort with binocular vision probably has a lot to do with the popularity of both the binocular telescope and the Bino-Vue type devices. Tnx es 73 de n7zi Gary "Why buy something for ten bucks when you can make it for a hundred.", J.R. -----Original Message----- From: utah-astronomy-bounces+n7zi=comcast.net@mailman.xmission.com [mailto:utah-astronomy-bounces+n7zi=comcast.net@mailman.xmission.com]On Behalf Of Chuck Hards Sent: Tuesday, January 20, 2004 6:57 PM To: Utah Astronomy Subject: RE: [Utah-astronomy] Unearthly feast for the eyes Gary, just cross your eyes until the images fuse. Much easier than random-dot stereograms since with those you don't have any references until the images are actually merged. And you discovered that putting them closer together, or reducing them, also makes it easier. If you can't normally focus on a single object about four inches in front of your face (just about duplicates the same eye configuration for freely fusing stereo images at normal reading distance), you won't be able to cross your eyes enough to do it without moving the stereo images further away from your face. Putting them closer together, laterally, helps also but the limit is reached when they are in contact. I do own a stereo viewer and I still prefer just free-fusing images 3 times out of 5, except when my arms aren't long enough... C. --- Gary Liptrot <n7zi@comcast.net> wrote:
Unearthly feast for the eyesJoe, This is just like viewing Random Dot Stereograms except my eyes will only let the images overlap a little less than half... hmmmm.
Ok, I reduced the images to 50 percent in Microsoft Photo Editor (the Windows 98 free default). I could then put them next to each other and given a minute I could bring them together. I wish I had viewers that would let me use the full pictures. I have plans for one somewhere in this mess... B)
de n7zi Gary
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