puddlepirate wrote:To follow on from the comments Obs made in his post...
One problem with the RFI and the various theories is to try and avoid making such evidence as there is - and there ain't much - fit a particular theory rather than letting the evidence determine the theory.
I don't know if anyone saw the Discovery Channel (UK) at around 9pm last night but Chas Halt was shown - and he stated that what he saw was a red light with a black centre and something that appeared to be like molten metal from a crucible coming off it.
In one interview Halt described this object as being small but bright when viewed by eye. The hollow centre effect was when viewed with the starlight scope:
HALT: OK, we're looking at the thing. We're probably about two to three hundred yards away. It looks like an eye winking at you. It’s still moving from side to side. And when you put the Starscope on it, it sorta seems a hollow center, a dar...dark center.
HALT: It's, it’s.
VOICE: . . . like a pupil.
HALT: Yeah, like a pupil of an eye looking at you, and winking. And it flashes so bright to the Starscope that, uh, it almost burns your eye.(Halt's party had two starlight scopes and "VOICE" must have been using the other one at the same time)
The Starlight scopes were not designed to look at a really bright light. These effects Halt described were, in my opinion, most likely due to saturation of the optical amplifier in the starlight scope. There's a good wikipedia article that describes these:
http://en.wikipedia.org/wiki/Night_vision_device#cite_note-15Including a diagram that shows how the image intensity is amplified in a two-stage cascade of electrons in a vacuum tube:
http://en.wikipedia.org/wiki/Image:Photomultiplier.svgElectrons repell each other. If you have two many electrons in the cascade through the vacuum tube they will interfere with each other and start distoring the image. The hollow center and dripping molten metal effect was probably just such an image distortion.
If you look at old tv programs from the 70's and 60's, you often see strange effects near bright lights. Video cameras then were not solid state but used another type of vacuum tube image detector called vidicon tubes. There a good wikipedia article on these that describes how bright lights would leave a dark halo around the outside of bright objects:
http://en.wikipedia.org/wiki/Video_camera_tubeIt really beggers belief the amount of money that has been spent on lavish TV documentaries without this story of Halt's being investigated properly. All it would take is one 2nd generation starlight scope and a few simple tests with small bright lights (or even the lighthouse - now there's a thought!), and I bet you'd get the same effects Halt described. Unfortunately, 2nd generation starlight scopes cannot be bought by members of the general public - they are still restricted. So it is not easy to do the experiment.
But the fact remains that starlight scopes were not intended to be used to image bright lights. They amplified the image intensity by 10's of thousands of times. It's really not surprising Halt saw strange effects using the starlight scope on a small bright object.