ZEISS Star Projectors



The New Star Ball for ZEISS Hybrid Planetariums

Fewer and fewer people have experienced for themselves an unspoiled view of the night sky. Planetariums, therefore, have the task of simulating the starry sky to appear in its most natural way possible. ASTERION is the contemporary answer to this task.

Brilliant Night Sky

True Black Hybrid Planetarium

Compact and Elegant

Economical and Environmentally Friendly


ASTERION is designed as an opto-mechanical hybrid component and shines with exactly what digital projections cannot: with stars, clear and bright, point-like and in natural gradation with a Milky Way that is particularly realistic to the eye.

Watch our premiere presentation on the virtual IPS conference in 2020

Recording: International Planetarium Society
ASTERION VELVET (computer rendering)

True Black Hybrid Planetarium

Couple ASTERION with a VELVET LED fulldome system for the no-compromise combination of analog and digital projection. No compromise means that the digitally projected imagery will not spoil the brilliance of the stars on the night sky and that the digital and analog planetarium projections will always be in perfect register.

Typical Configurations

ASTERION VELVET for small size planetariums up to 12 m dome diameter

In smaller domes between 8 m and 12 m in diameter, the combination with a two-channel VELVET LED system is recommended. The two VELVET LED projectors in the center of the dome create a shadow-free dome image with nearly 3k resolution.

Typical installation in an 11 m dome with a two-channel VELVET LED system in the center.

ASTERION VELVET for medium size domes

Exemplary system configuration for a tilted dome of medium size. ASTERION with the projectors for Sun, Moon and planets is located in the center of the dome. Six VELVET LED projectors at the periphery of the dome create a shadow-free dome image with approx. 5k resolution.

Typical installation in a 25 degree tilted 15 m dome with a six channel VELVET LED system at the periphery of the dome.

Compact and Elegant

ASTERION puts high opto-mechanical technology into a miniaturized form and creates the brightest starry sky with the smallest Starball of its class. It offers virtually no obstruction to the visitors.
Inspire audience with your performances, but also with your technology. ASTERION is a technical piece of art, small but prominent, raising curiosity.


Economical and Environmentally Friendly

With just 220 watts you won’t find ASTERION on your electric bill. ASTERION wants to be looked after, but will not devour your service budget. No consumables anymore to buy, exchange and waste.


Product information
Language: English
Pages: 2
File size: 168 kB





Dome diameter / tilt

8 m – 14 m, 0° – 30°

14 m – 18 m, 0° – 30°

Dome reflectivity

30 % – 60 %

45 % – 65 %

Horizon height

1650 mm – 2055 mm (standard)
min. 400 mm (in consultation)

2055 mm – 2200 mm (standard)


integrated lift for Starball optional

integrated lift for Starball (standard)


Starry sky

approx. 7,000 stars (down to 6.3 mag)

approx. 9,000 stars (down to 6.55 mag)

Colored stars

natural tints for all stars down to 1.7 mag

natural tints for all stars down to 2.1 mag

Scintillation (all stars)



Milky Way

optical projection (based on Gaia data)

optical projection (based on Gaia data)

Deep-sky objects



Sun and Moon


standard: approx. 1 degree diameter, Moon incl. clear surface details and phase changes



Mercury, Venus, Mars, Jupiter, Saturn (point-like)

Projection instrument

Height, max.

2322 mm

2377 mm


approx. 655 mm Dm.

approx. 760 mm x 1660 mm


approx. 130 kg

approx. 150 kg

Starball diameter

320 mm

320 mm

Starball rotations

up to 60° / s

up to 60° / s

Effect lighting

RGB light ring

RGB light ring


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