Originally used as a cool substitute for high heat producing carbon-arc lights, the daylight balanced HMI has become the standard of the motion picture industry. HMI's are four times more efficient than their tungsten filament counterparts and represent the most advanced concept in motion picture and television lighting today.

In keeping with Halcyon tradition, we are proud to introduce the world's first portable underwater studio lighting system, the Apollo HMI. The same quality and intensity of lighting that you would expect to find in a studio HMI lighting system, only capable of extreme depths independent of any surface-supplied power source.

The Best Just Got Smaller!
By incoporating Halcyon's NiMH battery technology into the Apollo HMI's design, we've been able to shrink the canister size down to less than a "standard" 14 amp hour lead acid primary light canister. The new NiMH Apollo HMI is one-third the size of the original Apollo HMI, with a longer burn time.

Proteus 6 vs. Apollo HMI	Old vs. New Apollo HMI Designs

Halcyon's 200 watt HMI lighting systems is a state of the art underwater lighting system capable of performing as good or better than most surface supplied lighting systems. This system has been featured in Bob Talbot's IMAX film OCEANMEN and is a favorite of renowned photographer Wes Skiles. The 200 watt system also gains high marks from world-renowned photographer Norbert Wu and a range amateur and professional videographers and photographers. The 200 watt HMI has an output equivalency of a 1,000watt halogen burning at a solid 5,600K.

The Apollo HMI's canister is 13.5 inches tall, 5 inches in diameter, and has a burn time of 45 minutes. The canister is milled from a solid rod of delrin for a lifetime of use.

The Apollo HMI is the preferred lighting instrument for the professional media diver. The intensity of the HMI system has to be seen to be believed. Only the HMI is capable of illuminating the mammoth passages of Wakulla with studio-quality light.

The Halcyon HMI underwater lights are 3-4 times more efficient (lumens/watt) than comparable tungsten-halogen lights. Since there is no filament to break, Halcyon HMI lights are less sensitive to vibration and shock. Halcyon underwater lamps are DC-operated discharge lamps in which the luminous arc burns in a dense vapor atmosphere comprising mercury and the halides of rare earth elements.

HMI lamps have a color temperature of 5600°K regardless of orientation, warm up in 1-2 minutes with an instant restrike ability.