Digitarium® Alpha 2 Fixed Digital Planetarium System
This model has been discontinued. Please see our current models.
See also Digitarium general specifications.
|Maximum Dome Diameter
||Approximately 33 feet/10 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
||4000 Lumens with 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. Please contact us if you may be interested in a brighter system.)
The projector has two lamps which can be used one at a time, or both together for the brightest projection.
||Some violet color separation is present, however we do not believe that this will distract from your teaching. This is a tradeoff in the interest of an affordable system and has been
improved from the previous model.
||1 TB standard.|
North America: 120VAC, 50/60Hz, 780 Watts
Elsewhere: 220-240VAC, 50/60Hz, 760 Watts
||FCC Class A, CE class A (RoHS compliant)|
||Dual lamp, automatic lamp failover or relay options,
direct power off (fan properly cools down lamp even if the power is cut off), dust filter, sealed optical block, shutter, LAN control and reporting
System: 21.5 x 13.5 x 32.75 inches (54.6 x 34.3 x 83.2 cm)
||System: 83 pounds (37.7 kg)|
Product photos may differ slightly from actual models.
[Our Zeiss starball] projector itself was great but we could not find any 'good' new shows for this format (slides). I told my boss it was like having a perfectly running car that required leaded gas to run. It works fine but no fuel available... Thankfully our entire group decided... to move into the digital age.
— Jim Duke, Henderson State University, Arkadelphia, AR