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On 6/6/18 6:32 AM, Chris Boden wrote:
I've heard of the concept, (I know it's how you guys get clear film of tank
bullets and missiles in flight and such), but I know absolutely nothing.
Care to teach and give me some links to study? :)
The only ones I'm really familiar with are these.
http://www.phantomhighspeed.com/Products/Phantom-Camera-Products
As an ambitious project you could probably make your own with a pile of
cheap cameras arranged in an arc and the spinning mirror.
However, for spark photography, a streak camera might work. Fixed film,
fast spinning mirror.
Check out the Boys Camera used for lightning research. You might be able
to improvise something with a standard camera and a suitable spinning
mirror at high speed (you probably want something like an air grinder as
the drive for the mirror)
Synchronization is the key for ultra-high speed photography. The high
speed (100k, million FPS) cameras typically capture a few tens of
frames, maybe 100. So they're often combined with an electronic shutter
of some sort - these days, CCD sensors can do electronic shuttering, but
in the bad old days of film, Kerr cells were the method of choice - yeah
baby, Nitrobenzene and high voltage pulsers, everything the garage shop
tinkerer wants to work with.
some 20 years ago, I was trying to figure out how to take video of two
bullets colliding.