Quote:
Originally Posted by Roger Davis
Depends upon the size of the fibreglass. You'd be better off with a piece of fibre optic of known numerical aperture. Holes in aluminium foil are cheaper to produce!
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Absolutely!!! A single STRAND of fibre optic cable is what you want because it has a very round end. Our artificial star, with a single F/O strand looks like a planet through a telescope from 50 metres away at night. I've seen people try and use a bare LED glued through a hole in the side of a box, but I can't imagine how large a whole LED would appear... it'd be unusable IMHO. I've also tried the old pinprick in the aluminium foil trick and it was very successful.