Innovation Special Planetariums 9 - Carl Zeiss Planetariums

Lower operating costs
For star projection, we have reduced power consumption from
2 x 105 W (halogen lamps) to 2 x 35 W (LEDs). The lower heat
load further permits us to use lower-power fans, which give
off lower noise. Last but not least this is somewhat friendlier
to the environment. A point not to be disregarded is the extremely
long life of the LEDs. According to the manufacturer’s
specs, the luminous flux after 60,000 service hours is still
about 70 % of the starting level. By contrast, the halogen bulb
has a life of 1,000 hours at maximum. Thus, LEDs appreciably
reduce the operating costs of the ZKP 4.
Lumen Maintenance (%)
1.2
1
0.8
0.6
0.4
0.2
Light output of the LED as a function of service life (manufacturer's data).
LED fixed stars illumination
device for ZKP 4.
0
1 10 100 1000
Time (hours)
10000 100000
LEDs for Sun, Moon and Planets
To adapt the projection of Sun, Moon and the planets to the
improved quality of the starry sky, LEDs are used also for these
celestial bodies. The natural colors of Sun, Earth and Mars are
reproduced by means of color filters.
Retrofitting possible
To make the advantages of LED illumination available to users
of a SKYMASTER ZKP 4 equipped with halogen lamps, we have
designed a conversion kit for retrofitting LED lighting.
Planetarium projector
SKYMASTER ZKP 4 LED.
SKYMASTER ZKP 4
Innovation Special Planetariums 9, 2012
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