posted on May, 4 2008 @ 07:00 AM
As far as I know, there are two systems used on night-vision cameras, infrared and light-enhancement.
Light-enhancement is just that, it increases the light levels of what the camera "sees". This has a problem, if there is on the same scene a strong
light the camera will be "blinded" by the enhancement of the stronger light source.
Infrared nigh-vision may work in one of two ways (I don't think that there are cameras with both systems), using a infrared light or just using the
available infrared light reflected by the scene.
The first system (that I think is the one used on all consumer video cameras capable of night-vision with infrared) can only show a good image of near
objects because the objects must be illuminated by the infrared light.
The second system is the most versatile but also the most expensive, but by showing what is visible with the available infrared light reflected and
emitted by the scene (I suppose that by using light-enhancement only of the infrared light) it shows all objects, not just the nearer ones.
This would be the best system to try to find "cloaked" crafts, but only if those crafts are "cloaked" to visible light and not infrared. As both
visible and infrared are very near (in fact they are continuous, infrared starts where red ends), if I wanted to make a cloaking device for visible
light I would try to do it also to infrared and ultraviolet.
Infrared also has a different problem, an object that is at the same temperature as the background will appear as the background.
In conclusion, I think that the guy from the documentary is using a good system, by comparing both images he can see more than using just one system.
It could only be better if he used also ultraviolet.
To answer you question, I know that there are some ATS members that have used (or are still using) infrared cameras, I remember at least one thread,
but unfortunately I don't remember the thread's title or who was the member that was using a infrared camera to make his videos.
I will try to find that thread.