Preheating High Pressure Sodium & Ceramic Metal Halide (CDO) lamp

The HPS bulb: Philips Master SON-T Pia Plus 70W/220
Brightness: 6600 lumens
Efficiency: 92 lm/watt
Energy class: F
Light color temperature: 1900K golden yellow, of course this can vary depending on the year of manufacture of the HPS lamp and this varies to more orange-white or more golden-yellow/white, this color change depends on the amount of mercury, older HPS lamps usually has slightly more mercury and the mixture with sodium gives an orange-white hue, the less mercury there is in the arc tube, the more yellow-lemon the HPS lamp will produce and of course in many cases this changes very slightly when the HPS lamp approaches the end of its life
Color rendering index CRI: 25
Dimmable: Yes
Voltage: 88-92V
Current: 0.9A
Mercury content: 12.2mg
Luminance retention at end of life: 80-90%

The CDO bulb: Philips Master CityWhite CDO-TT Plus 70W/828
Brightness: 7700 lumens
Efficiency: 105 lumens/watt
Energy class: F
Light color temperature: 2800K Warm white
Color rendering index CRI: 86
Dimmable: Yes
Voltage: 88-91V
Current: 0.9A
Mercury content: 7.8mg
Luminance retention at end of life: 70-80%

HPS/SON electronic ballast: Philips primavision xtreme son70

CMH (CDO) electronic ballast: Philips dynavision programmable xtreme CDO70

In the video the CDO bulb appears to be white, in reality the light is a little warmer than it appears in the video due to the camera, unfortunately my phone camera is not very good

Music 🎶: Stellar Wind- Unicorn Heads