I'm glad to hear you enjoy this kind of thing! I had a quick look at your post history and you have made some really great stuff, keep it up!

When I first saw this I was wondering how you had generated the left and right images and thought you may have been using images captured at different times to simulate the lateral separation. That is a super neat way of approaching this stereogram, and it would explain why it works so well since you only have motion along a single axis (minimising vertical disparities, which can cause issues).

Unfortunately the stereo images I have made are rather boring, usually a texture patch that is magnified in one eye to give the impression of slant. However, it is something I would like to dabble in when I have some time off. I'll be sure to keep an eye out for anything you make in the future!

This is really cool and very very well done! Good job :) It is usually very hard to get everything right with a stereogram like this, typically there are some doubled edges as a result of imperfections in the lateral separation of the capture locations, but I can't see any in these.

You mentioned that the moon looks closer to the earth than it actually is, and that's an interesting point to make. Typically our visual system is able to calibrate horizontal disparity information based on familiar objects/depth intervals. This is known as stereoscopic depth constancy. When dealing with huge objects and huge distances (such as those featured here) it is inevitable that some distortions will occur. These sorts of stereograms are also subject to what is known as the "cardboard cutout phenomenon" which is why the moon itself appears somewhat flat while there is a very clear depth interval between the moon and the earth.

Sorry for the essay, I just finished my phd on stereoscopic depth constancy processes and wanted to nerd out for a little in the oddly specific field i chose haha. Keep up the good work!