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Just shape-shifting. Not a big deal. :rolleyes:

Yeah, also she claims the go fast was going 500mph based on some "rough math" (paraphrasing). All these pilots seem to forget that "the devil is in the details" in most UAP cases.

The full aperture of these pod windows surely will be affected by the harsh outside weather. I can imagine these windows need cleaning and maintenance quite often. But, as this surface is scattering, it will show the (spiky) glare seen in the videos, why is this a question? Do we really need...

You're not wrong. I have been involved in many optical projects related to astronomy (but not only) for two decades (ground based, but later space). I found that there are many different types of optical engineers. Some are more specialised in laser optics, some others more in imaging optics...

Agreed.

I agree, I just wanted to keep it all a bit more easy to grasp for the "non-optical" folks in this thread. But yes indeed, it matters where the pupil stop is and what element is stray light affected and where it is wrt the pupil.

You do. Because the full surface is acting as a stray light source. And as all rays coming from the object fill the FULL aperture (say, lens/mirror diameter), the stray light will cover the full frame/image. When the object would not be hot/bright, this stray light would be hardly visible. But...

@Buckaroo, I agree, I was about to write up a similar response, but as you already have penned it nicely, I will leave it there. :)

They use(d) special material that takes away most of the heat during the re-entry (and some more techniques). This means the Astronauts could be safely brought back to Earth, otherwise the whole module would have burned to a crisp. This also means the module was likely not very hot, and for...

I don't think the optics are poor (actually, it is very high end optics with low stray light). The only optical surface which can never be perfect, is the outside window on the pod. This surface will suffer from all the wind and what not hitting it, causing... micro scratches. These scratches...

Correct. Straylight = glare. And a non perfect surface (perfect: polished to nm surface roughness) is causing the passing light rays to scatter, ruining the image causing noise and glares.

Yes, indeed I am totally agreeing on this. It is just that the system at least has the ability to also focus when needed. No dispute here.

Are you asking me? Not certain who you are asking.. EDIT I think you ask me. :) Well, the glare will not be shown as a "cut in half" image. So that the upper half has glare, and the bottom part not. This is not correct, the glare is distributed over the entire image. I made a small paraxial...

No, this is not what happens. Please read my former post (nr 586)

Thats is because it does not work that way. The window is not in the object plane and therefore the smudge on it does not get resolved in the image. So Domzh's idea is not seen. Both flare and smudge are straylight inducers though.

The ATFLIR does have an opto-mechanical system in the design to focus. Thus it can be indeed an active autofocus is happing in the go fast video.

But if the range indicator in a bloody fighter plane is giving false data, why is it there? Sounds very handy in crisis situations... "We are approaching our target, but uh, we have no idea how close we are, sorry".

I think there is way to calculate, or at least estimate, what the hyperfocal distance is of your camera/lens. At what f/# was the camera set?

Indeed an illusion created by parallax.

No problem (I am not a moderator btw). Yeah I think there are a number of other vids made and posted..