With the explanation of the Gimbal “UFO” as a rotating glare where the rotation is caused by the camera rotating, a frequent question is why does the glare rotate when the horizon is not rotating?
This is quite a reasonable question – after all, if the camera was rotating, you would expect the entire scene to rotate. But instead, only the glare is rotating.
The answer is not that complicated but does require a little effort to follow. The rotation is UNWANTED rotation caused by the gimbal mounting. As explained in the ATFLIR patent, there a “derotation” mechanism that removes this rotation.
That stops the horizon from rotating, but because the shape of the glare is a function of the camera, the glare still rotates.
In this video, I show how you can demonstrate this for yourself.
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Gimbal UFO: Why Does the Glare Rotate When the Horizon Does Not?
33853 , 2019-07-12 23:46:02 , 00:02:09
UCF3UCTZiVg9wrIEzO7Om6jw
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Gimbal UFO: Why Does the Glare Rotate When the Horizon Does Not?
