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I did some testsa couple of years ago using an IR filter.
Suprising how much data i got in 90 seconds of exposure, as apposed to 5 minutes using normal vision spectrum.
The camera was a QHY-8, but a modded Canon 20D etc, was just as good. In fact, with the UVIR filter removed, and using a small exposure time, i actually got the glow of heat from a soldering iron running at 400 DegC. It was cool to see the iron glowing in white light.
Anyway, heres the images, and it really is cool to see things that just dont come up on a normal image.
Theo.
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