A non-trek related one from the Bsky page that I thought was amazing:

Its been 30 years, I still dont see anything

Ah, I was expecting Klingons.

Good luck if you're looking at this on a phone, is all I can say. You probably want to have Mr. Data put it on the main viewer screen first.

Is it a schooner?

These are called magic eye by many but are technically stereograms.

Firstly it requires two working eyes. That can align together.

So people with cross eye or a lazy eye can't do these. Though these can be used to help such people train their eyes to work together better.

They are easier to learn to do as a kid. Adults who never have successfully done the trick really struggle with it. But it's not impossible to learn.

Also. For some people they make people feel nauseous.

Also. The more you practice the easier it gets.

You build up an ability rather quickly because it's muscles you already use. You are just learning to "decouple accommodation and vergence "

By this I mean. When you look at something with both eyes, they converge together at that point in space. The angles of each eye meets.

Accommodation in vision refers to how the lens in your eye (the one behind the iris, not the cornea) changes in shape to focus light. Like how a focusing ring on a camera works.

Vergence and accommodations are synergistically linked. Meaning the often influence one another and function together. Each providing feedback to other to tune that ability to look at something with both eyes and it be brought to focus.

Here is how it relates to stereograms.

The trick to see them is to disconnect your accommodation from vergence.

Your eyes must converge to a point farther away than the actual location of the image. But accommodation must match the actual image location.

You are looking farther away yet your eye is focusing on the image. So it's clear and not blurry.

You can also do this where the vergence is in front of the image but that's way harder and took me a while to get the hang of it. It also causes more eye strain. These magic eye images are not intended to be viewed that way.

Now that you know the mechanism , this might help you figure out tactics to see the image.

Essentially it looks like 3d objects covered in wall paper pattern. There aren't any surface details. Just 3d shapes.

Hope that helps!

I'm an 80s kid, I never was able to see these right

What am I supposed to see here?

It must be schooner.

I've always just used the crosseye method resulting in the inverted image.

That's got to be one of the toughest to maintain magic eyes I've seen yet.

Looks like 2 enemy ships at different angles and then a weird blob for some reason in the top right

Thanks .... now I have to book an appointment with my optometrist

these always seem backwards. I resolve them inside out.

Always weird to me that the most direct, aggressive and honor-driven race is also the one that developed cloaking technology. Seems antithetical to all of that to be sneaky.

They can't fire while cloaked!

I usually can do these stereoscopic pics pretty easy, but I found this one to be harder! Maybe the resolution is too small? I eventuality got it to work on my phone (granted, it isn't a normal phone and has a huge screen) and it seems like it's a crossview and not a parallel view.

Check out c/ParallelView and c/CrossView to see the differences and see what works best for you! For me, parallel view is the best and easiest to do. Cross view on the other hand, is always an inverted perspective for me and I have never gotten that to work properly. What I do is relax my eyes so I see double and apply that when looking at these pics. Usually my brain auto adjusts it and it just works. Look up tutorials on it, it even works with videos!

It took me a minute on my phone screen, but I can still see it!

Ooh, outnumbered! Not looking good for the old Enterprise…

I can't do it with my glasses on. So, that means I need to get close to the monitor because I'm near-sighted, which means I need to make the image smaller. Once I do all that, I can see them.

I don't know what's changed, because the first time I saw one was as a print displayed at a mall, probably 35+ years ago.

Some are easier to see than others. I find the ones with a bigger pattern image like wallpaper, rather than the small dots are easier.

Couple of Romulan D'deridex-class warbirds.