Re: Altman Comet follow spots
The 1000Q is an inefficient spot design. It uses a dish reflector, and with an FEL lamp the LCL is far too large to stay coherent through the optics - which barely qualify as high tech optics. The Comet uses a lamp with a proper reflector and far better optics. I'll keep it simple - my MagLite is comparable in raw output. In fact, a our 1980s Strand Century Lekolites have far superior performance now that I've put in modern lamps and done some instrument maintenance.
If you really want to find a better spotlight than the comet, you'll have to prepare yourself. Lighting often has the same issue with audio when it comes to stepping up to the next level of intensity/power. 3dB takes twice as much power - and in terms of lighting, that means a heck of a lot more lumens. What really matters is the efficiency of the fixture as a whole. Interestingly enough, for a few hundred more than would be sunk into a Comet, you could purchase a 5deg Source Four and all of the applicable City Theatrical followspot accessories. It's significantly brighter and easier to transport (though does require assembly and higher level lighting electrician knowledge to maintain at the level where it would surpass a Comet. However, it's only a small upgrade.
If anyone here checks my work and feels like I've made an error, please let me know. I think I've done my math correctly, and I feel like the only real upgrade from a Comet you're going to get, Gene, is going to cost you upwards of 4k unless you buy used - and even then not much below.
