[Tig] fast camera in wind tunnel

[Graham Collett]

2 million fps ???? I work with a specialised client using a camera that
runs at 9000fps, they need to load 2 rolls of film together and it then
takes the first roll to get up to speed followed by 2 seconds of
pictures on the second roll ...
What the heck can you do with  2 million and who oils it and puts it
back together again

Graham Collett
Sprockets(telecine) Ltd
www.sprockets-telecine.co.uk
 


-----Original Message-----
From: tig-bounces at tig.colorist.org [mailto:tig-bounces at tig.colorist.org]
On Behalf Of Chuck Harrison
Sent: 15 January 2007 22:10
To: Rob Lingelbach
Cc: tig at colorist.org
Subject: Re: [Tig] fast camera in wind tunnel


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Rob Lingelbach wrote:
> 
> [...]  This camera will shoot at 2 million frames per second.

There are a number of special techniques used in high speed photography.

Eight years ago I was working on a physics experiment at Los Alamos and
used a Hadland electronic camera. It only took 8 frames but they could
be *very* fast. In fact, it took an "end run" around the problem: it was
really 8 cameras. A super prism block after the prime lens divided the
image 8 ways to 8 individual sensors. Each sensor contained a
microchannel plate image intensifier (adjustable gain, makes up for the
low light!) and a CCD array. The MCP intensifiers were electronically
gated so their exposure instants and durations could be set down to the
nanosecond range.

The Hadland was well-established technology at the time; I can't say
what a brand-new 21st-century 2-million fps camera might be doing.

Cheers,
  Chuck

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