This model has been discontinued.
Please see our current portable or fixed models.

Product Overview

Digitarium Theta

The Digitarium® Theta model is a digital planetarium system designed for use in portable domes.

The new Digitarium Theta is our highest resolution portable planetarium system, designed to be easy to transport, set up, and teach with. It projects high contrast 2160 pixel diameter imagery over a full dome with no blind spots or cut-outs. It is the culmination of years of development effort, with our own innovative proprietary lens design.

The Digitarium Theta uses a laser-phosphor projector with an incredible expected lifetime of 20,000 hours.

The Digitarium Theta also offers quick set up, intuitive user interfaces, excellent projection quality, and a wealth of other features. Digitalis sells inflatable domes in several diameters for a complete portable solution.

Choose from a lower cost Basic option or much more powerful Professional software package. See specifications below for details.


Maximum Dome Diameter
7m / 23 ft
Pixel Diameter
Projected Resolution
3.66 megapixels
Field of view
180 degrees (full sky)
Pixels per degree of sky
Angle of Projection
Base Projector Brightness
3,000 lumens
Contrast Ratio
Nominal: up to 2,000,000:1
Light source
Laser-phosphor. 20,000 on high brightness.
Control Unit
Digitarium CU-Z
User Interfaces Included
Software Nightshade NG Basic (more limited features) Nightshade NG Professional
Audio Output
Stereo with integral speakers; stereo with external user supplied speakers.
100-240 VAC, 50-60 Hz, 740W
FCC Class B, CE, RoHS compliant.
Class 1 laser product.
System: 20.5 x 21.0 x 11.5 inches (52.1 x 53.3 x 29.2 cm)
Transit case: 34.0 x 29.0 x 17.0 inches (86.4 x 73.7 x 43.2 cm)
System: 42 lbs. (19.1 kg)
Transit case: 39 lbs. (17.7 kg)
Total: 81 lbs. (36.8 kg)

The transit case has built in wheels and extendable handle for easy transport on flat surfaces.

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