Innovation Special Planetariums 9 - Carl Zeiss Planetariums

First 2-channel Hybrid Planetarium in Europe
Stefanie Neuhäuser, Carl Zeiss
The first Hybrid Planetarium comprising
a 2-channel fulldome system and an
opto-mechanical projection machine in
Europe was put into operation in Italy in
December 2011. In Cagliari, the largest
city of Sardinia, Carl Zeiss installed the
first SPACEGATE Nova fulldome system
together with a SKYMASTER ZKP 4 star
projector.
SPACEGATE Nova designates a dome
projection system into which Carl Zeiss
integrates selected commercially available
projectors. At the Planetarium of
Cagliari, two F32 projectors (projectiondesign)
are arranged close to the star
projector at the dome center. SKYMAS-
TER ZKP 4 and SPACEGATE Nova work in
perfect synchronism.
Adrienne Ruhnau
Der Maler Ruhnau, Drebach
“Credentials”
Il Planetario
de L'Unione Sarda
Piazza L'Unione Sarda
09122 Cagliari
ITALY
planetario@unionesarda.it
www.planetariounionesarda.it/
ZEISS SKYMASTER ZKP 4
powerdome®SPACEGATE Nova
Opening: 2011
Dome diameter: 10 m
Refurbishment of Dome Surfaces in Planetariums
Renewing the paint coat of the perforated projection surface
of a planetarium dome must ensure the necessary homogeneity
and therefore calls for special knowledge and skill. The surface
must be painstakingly cleaned, the perforations must not
be clogged with paint, and sheet-metal edges require particular
attention.
A company in Drebach known as "der maler ruhnau" is specialized
for spray-painting planetarium domes and works as a
partner of Carl Zeiss AG.
The company uses a special spraying method for dome surfaces.
After cleaning with compressed air, paint is applied in
several layers. The paints are free of any solvents and have
been tested by Carl Zeiss for reflectance and gloss. The paint is
sprayed on obliquely relative to the perforation, at a computed
angle. The result is a neat, homogeneous coat system including
the circumferential surfaces of the holes.
During these jobs, the equipment in the planetarium must be
protected against impacts and dust. Carpeting is covered with
dust-proof sheeting. The workers at the dome surface are supported
by telescoping working platforms or scaffolding.
Reference jobs carried out by the company include the following:
• Zeiss Planetarium of Drebach, Germany
• Kassel Planetarium, Germany
• Zeiss Planetarium Bochum, Germany
• Planetarium minikosmos Lichtenstein, Germany
• Kreuzlingen Planetarium, Switzerland
• Brügge Planetarium, Belgium
Innovation Special Planetariums 9, 2012
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