Inside a VL3000 moving head light. TCF04:33

This is a very common light in the entertainment industry. It’s basically a very high quality moving yoke light with a well engineered optical path to maximise its light output.
Unlike cheap disco lights, this type of light is specifically designed for continuous touring and is extremely heavy and rugged. (a two person lift)
Because these lights were engineered to withstand the abuse of being toured they cost in the region of about $20,000 each when new. You can buy working used ones for closer to $4000 now, but they are still good workhorses in the industry, so it’s not that easy to source them. The spares are also quite expensive due to their complex and proprietary nature.
One of the most notable features is the way that their colour and beam-shaping “bulkheads” can be swapped quickly in-situ. One of the less desirable features is the mount of case disassembly to change the electronic lamp ballast!
One of the many notable features of these lights is that they reduce the power to the discharge lamp when the shutter is closed to prolong its life.