I wanted to share an experience from last night to see if it is repeatable for others or just a fluke of my particular observing system from objectives to visual cortex.
While trying to determine the magnification of a pair of eyepieces salvaged from a Tasco Zip binocular. I have 23mm, 20mm and 18mm eyepieces to compare them with. I put one of the Zip EPs in one side and a Vite 23mm in the other of Mr Bill's Bino Box Redux, a 127mm asymmetrical binocular telescope.
At first I was just looking at each in turn with my left eye. The salvaged EP had a slightly larger image scale. It dawned on me that both were coming to focus at very nearly the same height so I refocused the right side for my right eye and took a binocular look. The impression of depth was immediate and unmistakable. I was looking at M42 and the stars seemed to really be at various distances. It was like looking at a 3D image in a stereoscope.
The image is not without flaws as obviously at some point out from center the stars no longer overlap so you see offset duplicates. Still the impression of the object in the center is well worth it.
I hope to try soon with some other unmatched EP pairs to see how it works at other separations and if switching sides makes a difference. I'll also see if the same effect is generated in a binoviewer.
I hope others will give it a try and share their experience.
Thanks for reading.