The new Star Ball for ZEISS Hybrid Planetariums

No reason any more to do without a brilliant starry sky!

Fewer and fewer people have experienced for themselves an unspoiled view of the night sky. Many have never seen the Milky Way in its full splendour. Planetariums, therefore, have the task of simulating the starry sky to appear in its most natural way possible. But with what? Today, anyone who needs to equip a planetarium is faced with the question of whether or not an opto-mechanical projector is still relevant.

ASTERION is our answer.


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.


True Black Hybrid Planetarium

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

Compact and economical

ASTERION puts high opto-mechanical technology into a miniaturized form and creates the brightest starry sky with the smallest Star Ball in the world. It offers virtually no obstruction to the visitors. 
With its 300 watts, ASTERION is very economical in its power consumption thanks to the enormous efficiency of the star lighting.


Inspire your audience with your performances, but also with your technology. ASTERION is a technical piece of art, small but prominent, raising curiosity.





Projection Dome

Dome diameter / dome tilt

8 m – 14 m, 0° – 30°

14 m – 18 m, 0° – 30°

Dome reflectivity

30 % – 60 %

45 % – 65 %

Horizon height

1600 mm – 2055 mm (standard)
min. 400 mm (after consultation)

2055 mm – 2200 mm (standard)
min. 400 mm (after consultation, without lift)


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 (Gaia data)

Optical projection (Gaia data)

Deep-sky objects



Sun and Moon


standard: approx. 1° diameter
Moon incl. surface details and phase change



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

Projection instrument

Hight, max.

2322 mm

2377 mm


approx. 655 mm (26 in) dia.

approx. 700 mm (28 in) dia.


approx. 120 kg (265 lbs)

approx. 150 kg (330 lbs)

Starball diameter

320 mm (12.6 in)

320 mm (12.6 in)

Starball rotations

up to 60° / s

up to 60° / s

Effect lighting

RGB light ring

RGB effect lighting

Product information

Language: English
Pages: 2
File size: 173 kB