SPACEGATE Gemini projectors can be installed in close proximity to a central planetarium projector like the ZEISS ASTERION.

ZEISS Fulldome Systems

ZEISS SPACEGATE Gemini

Fulldome systems with selectable brightness and resolution for small and medium dome sizes

With SPACEGATE Gemini, ZEISS offers a new two-channel digital projection system for domes from 6 m to 14 m in diameter. It is equipped with two Barco F80 projectors. SPACEGATE Gemini is based on affordable professional components that meet the investment possibilities of small planetariums.

Replacement solution for SPACEGATE Duo and SPACEGATE Quinto

Integrate SPACEGATE Gemini into your existing planetarium. The projection system is perfectly suited to renew a SPACEGATE Duo or SPACEGATE Quinto installation if required. For the installation, it almost does not matter which planetarium projector is located in the center of the dome.

F80 Projector Series

Barco's F80 projector series proves to be advantageous in terms of balanced image parameters and adequate price-performance ratio. The availability of several resolution and brightness variants also allows individual adjustments to dome size, reflectance and quality requirements. The projectors impress with their luminosity and strong colors. Both projectors of the system can be well matched in brightness and color reproduction. This is a prerequisite for a homogeneous fulldome image.

Special blend solution and auto-calibration

Projectors without maximum contrast in multi-channel fulldome systems require special masks to be able to blend the image channels as invisibly as possible. For the two-channel projection with SPACEGATE Gemini, we have developed a special masking technique for invisible overlapping. Planetarium visitors will experience a homogeneous fulldome image.

Camera-based auto-calibration makes it easy to keep the image quality consistent even when slight mechanical deviations or changes in projection parameters affect the dome projection.

Additional Information

Designed for smaller dome sizes
Image quality	DLP technology with good contrast Selectable resolution between WQXGA+ (2560 x 1600) and eShift 4k (3840 x 2400) Selectable projector brightness between 7000 lm, 9000 lm and 12,000 lm
Colors	Saturated colors Color space corresponds to Rec. 709
Brightness	Impressive brightness for all planetarium applications Higher stability of brightness compared to lamp projectors
Blending	ZEISS Advanced Blending Technology (developed for laser phosphor projectors)
Light sources	Laser phosphor with long operating time (> 20,000 h)
Projector & housing	Absence of stray light in the projector Light tightness, no light leakage at housing parts Stable projector mounts Very quiet thanks to advanced cooling design

The configuration examples are for your guidance. Please contact us for further configuration possibilities.

Number projectors	2 (dome center)
Dome diameter	6 m to 14 m
Resolution (approx.)	3k - 4k
Planetarium projector	SKYMASTER ZKP 4

Number projectors	2 (dome center)
Dome diameter	8 m to 14 m
Resolution (approx.)	3k - 4k
Planetarium projector	ASTERION

Number projectors	2 (dome center)
Dome diameter	6 m to 14 m
Resolution (approx.)	3k - 4k
Planetarium projector	none

Number projectors	2 (dome periphery)
Dome diameter	6 m to 14 m
Resolution (approx.)	3k - 4k

SPACEGATE Gemini
Projection area	360° x 180° (also suitable for dome projections smaller than 180°)
Dome diameter and tilt	6 m to 14 m, project-specific configuration for tilted auditoriums on request
Horizon height	2055 mm (compatible with SKYMASTER ZKP 2, ZKP 3, ZKP 4 and ASTERION projectors) higher horizon after consultation
Installation area dome center	approx. 680 mm (east-west) x 2000 mm (north-south) with ASTERION
Blends between partial images	Advanced Blending Technology (developed for Laser-phosphor projectors)
Configuration	Two-channel projection
Projectors	Barco F80
Light source	Laser-phosphor
Resolutions (approx.)	3k - 4k

Projection data
Dome diameter 6 m, 45 % reflectivity	Q Series 7000 lm	4k Series 7000 lm
Resolution	2.6k	3.8k
Angular resolution	4 arcmin	2.7 arcmin
Brightness	21.4 cd/m²	21.4 cd/m²
10 m, 45 % Reflexionsgrad	9000 lm	9000 lm
Resolution	2.8k	4k
Angular resolution	4 arcmin	2.7 arcmin
Brightness	11.2 cd/m²	11.2 cd/m²
14 m, 45 % Reflexionsgrad	12,000 lm	12,000 lm
Resolution	2.8k	4.1k
Angular resolution	4 arcmin	2.7 arcmin
Brightness	7.9 cd/m²	7.9 cd/m²

Contact

ZEISS Service

Learn more about our comprehensive range.

Get in contact with us.

Here you can approach us with your questions

Join our team.

Job openings at ZEISS

Follow us on Facebook.

Interesting facts about ZEISS Planetariums

Related ZEISS Websites: