Yes, I know. I make 3D pairs from my micro minerals images (*). Sound a bit strange, sometime big planet images, sometimes small mineral images
Because I not able to see the stereo pairs, I have builded a device with four prisms from an old binocular and now I see both 3D posibilities, cross eyes and straight eyes. In my past post I tried to say that the effect was a bit strong, the Moon apperance was near a rugby ball instead a sphere. The aspect of flattened sphere, correct sphere or "rugby balon" is created by the used angle between the two images. Or in my micro images the variation of angle modify how deep seem the "micro landscape". I have found that four degrees is a good value.
In planets, I have tried to do 3D pairs too, but it is easier with Jupiter that with the moon
: I no must wait some months, only half hour !
(*)
https://lh5.googleusercontent.com/-q...rita1_3D_X.jpg