Of course, that’s the focal spot being lit up by the mirrors. It’s desgined to absorb the light focused on it, but it probably only absorbs about 95% ( my guess. ) Note the mirrors are dark, since none of them reflects light towards the plane.
I know. That occurred to me too. It's nearly as bright as an arc welder, but the surface that's reflecting it is basically black. That's a bodacious amount of light, bro.