Digitarium® Alpha 2+ Portable Digital Planetarium System
This model has been discontinued. Please see our current models.
|Maximum Dome Diameter
||Approximately 56 feet/17 meters. Brightness
is the main
issue, since the larger the dome,
the larger the surface area the light from the projector must cover.
||768 pixels across a diameter
|Field of view
||180 degrees, full sky.
|Pixels per degree of sky
|Angle of Projection
|Base Projector Brightness
||6500 Lumens with both lamps and a non-fisheye lens (Provided for comparison purposes with other systems. Actual brightness with a fisheye lens is significantly less due to not projecting the whole video rectangle and differing lens properties.)
The projector has two lamps which can be used one at a time, or both together for the brightest projection.
||Improved sharpness and less violet color separation than in the Digitarium Alpha 2.|
||1 TB standard.|
North America: 120VAC, 50/60Hz, 1020 Watts
Elsewhere: 220-240VAC, 50/60Hz, 1000 Watts
||FCC Class A, CE class A (RoHS compliant)|
||Dual lamp, automatic lamp failover or relay options, direct power off (fans properly cool down lamps even if the power is cut off), dust filters, sealed optical block, shutter, LAN control and reporting
System: 19.5 x 16.5 x 25 inches for storage (50 x 42 x 64 cm),
19.5 x 16.5 x 35 inches in use (50 x 42 x 89 cm)
Transit case: 39 x 25 x 22 inches (99 x 64 x 56 cm)
System: 75 pounds (34 kg)
Transit case: 47.6 pounds (21.6 kg)
Total: 123 pounds (56 kg)
Product photos may differ slightly from actual models.
We are extremely satisfied with the performance of the Digitarium Epsilon projector... We especially enjoy the alignment-free operation of the single projection system, plenty adequate brightness for our 30-foot dome, and excellent image quality...
— Alan Gould & Toshi Komatsu, Lawrence Hall of Science, Berkeley, CA