HMI 575 Lamp Bulb 575W - Metal Halogen Lamp

• High intensity light providing true color performance with a CRI>90
• Longer life with heat dissipating round moly-foil design on lamps ≥ 6000W
• Mechanically robust with eXtreme Seal (XS) technology, up to 450°C at the pinch seal​
• Capable of hot restrike ignition
• High color stability with average changes in color temperature during lamp life only 1°K/hr
• Dimmable down to 40% with stable color using many electronic ballasts
• High energy efficiency providing up to 100 LPW​
• Compression sealed base provides ehanced durability

• Studio, TV and film
• Professional Photography
• Solar Simulation

Osram are No Longer making those model Lamps but this one is a replacement that will do the job.   

Phillips brand are available at $399 each