>IMAX doesn't run at a higher framerate, your probably thinking of
>Showscan, which I believe uses a smaller flavor of 65mm (5 perf or 8
>perf) or VistaVision (35mm film shot sideways and 8 perfs wide, double
>the image area of regular 35mm motion picture film) at something like
>60 frames per second. IMAX runs at 24 frames per second, but the
>extreme size of each frame means a lot more space is taken up by less
>frames, hence the time limit. The IMAX film Titanica was 90
>minutes, but there was an intermission while they changed reels.

You may be right, I don't remember - but I was pretty sure it ran at a higher rate, on different film. It may have been the same material, but the wheels are, what, two and a half feet across and four inches wide?

>I have to check this but I'm pretty sure they use two seperate
>projectors for the left-eye/right-eye reels. Was this how they ran it
>where you were at? (I'm assuming they had an IMAX theater there)

You're quite right, sort of - this I do remember. It's one unit, but it has space for three reels and has two projectors incorporated. So, although the two seperate reels are running through the same machine, effectively they are on two seperate projectors.

>The IMAX theater in Ft. Lauderdale has a seperate room off of the
>projection booth that is just for the cooling system. I used to get
>nervous changing the 2000 watt zenons in the regualr projectors at the
>movie theater I worked at (they go up like hand grenades when they
>break), I can't imagine changing one of those 15,000 watt monsters.
>:)

Did they? Hmmm... I don't remember that, although I do remember a lot of concern about 'the cooling system', so I just may not have noticed. I do know that the temperature in the projection room goes up about ten degrees after a forty-minute film...

-Craig