Digitalis Digitarium Epsilon Portable Planetarium

New product

$ 2,450,000

  • Out of stock right now. Pre-orders are accepted for this item.
  • Brightest, best color reproduction at this resolution.
  • Resolution (Pixel Diameter): 1200
  • Weight: 73 lbs. (33.2 kg)

This product is no longer in stock

The Digitarium® Epsilon Portable model is a digital planetarium system designed to be portable. This system can be used in either a full dome or a truncated projection mode. It is very similar to the Digitarium Gamma Portable model, but offers higher resolution (about 30% greater in full dome mode and 56% greater in truncated mode).

Full dome/full sky projection is available at a projection angle of 155 degrees. This is not ideal for the typical inflatable dome as the projection will be somewhat higher on the dome than a more immersive 175 degree projection. It is, however, a good solution if you want to use chair type seating, have a higher than typical dome springline, or need a moveable system for a fixed dome.

In truncated projection mode, a 1344 pixel diameter truncated circle (truncated to a 1920x1200 pixel frame) is projected at a 180x155 degree projection angle. This mode is typically best suited for high resolution wide angle immersive movie uses. The planetarium features will still work, but with part of the sky missing we don't recommend this mode for serious astronomy education.

The Digitarium Epsilon has the same unmatched usability of other Digitarium systems with our exclusive backlit, handheld remote control.

This model is designed for those who want high resolution and the best projection quality in a portable Digitarium system but can not afford the Digitarium Kappa Portable model. If you intend to show a lot of fulldome video shows, immersive environments, or scientific visualizations, the higher resolution will be invaluable. Starfields will also look better, especially with the high contrast and our high quality proprietary lens.

Despite all these features, the price is a fraction of other high quality full dome fisheye planetarium systems of similar resolutions!

Projection ModesFull DomeTruncated
Resolution1200 pixel diameter circle1344 x 1200 pixel truncated circle
Field of View180 degrees, full sky.180 x ~155 degrees.
Pixels per degree of sky6.7 average7.5 average
Angle of Projection155 degrees180 x 155 degrees
Maximum Dome DiameterAround 52 feet/16m in full dome projection mode. Brightness is the main issue, since the larger the dome, the larger the surface area the light from the projector must cover.
Base Projector Brightness7650 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.)
Contrast Ratio2200:1 measured
Lamp lifeUp to 2000 hours on high.
The projector has two lamps which can be used one at a time, or both together for the brightest projection.
Image QualityDigitarium Epsilon systems use our most advanced proprietary lens design for the best projection quality available inDigitarium systems.
Control UnitDigitarium CU-1
Internal Storage2000 GB expandable up to 8 TB or more.
Power100-240 VAC, 10.4 A, 50-60Hz
RegulatoryFCC Class A, CE class A (RoHS compliant), UL or CSA listed components
DimensionsSystem: 20 x 16.75 x 25 inches for storage (51 x 42.5 x 64 cm),
20 x 16.75 x 35 inches in use (51 x 42.5 x 89 cm)
Transit case: 39 x 25 x 22 inches (99 x 64 x 56 cm)
WeightSystem: 73 lbs. (33.2 kg)
Transit case: 47.6 lbs. (21.6 kg)
Total: 120.6 lbs. (54.8 kg)

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

US Price$47,330

Projection technology


Lens features

User adjustable focus and centering

User Interface

Most interaction with the projector is with a hand-held remote control, much like a TV remote. The primary remote is backlit for use in a dark dome, and buttons are labeled with icons. This remote controls all aspects of the sky, your settings, and multi-media display.

No keyboard, mouse, monitor, or laptop is required. Using a remote control, all commands are at your fingertips anywhere in the dome.

You can also use our Universal Console™ software for elegant system control from multiple computing devices, including the Apple iPad®. The Universal Console software is included with all fixed dome purchases and is available as an optional add on for portable systems.


Over 11.5 million (Nomad catalog)

Internal Storage

1 TB (1000 GB). Used to store images, videos, data sets, and scripts on the system for your convenience. TheDigitarium CU-1 control unit currently supports an additional 3 TB for add on data sets.


The planetarium software used is Nightshade, maintained by Digitalis. Please download a version if you are curious.

Our Digitarium software platform allows very flexible image and video display. Place media on the dome where you want it in real time and even mirror it for better audience visibility. All distortion correction is done on the fly so you can easily show regular "rectangular" media on the dome. And of course, playing fulldome videos is a breeze.

Underlying everything is the open source Linux operating system, although this is completely hidden from you. Source code for all open source software used in the system is available to our customers.

Also included is a 1 TB USB drive with images and videos which complement our free lesson plans.

Multimedia Support

For increased flexibility you can project your own video or images. Simply copy your files to a USB drive and plug it into the system. You can also copy files to the large internal drive. MPEG-2 and MPEG-4 are our best supported video formats, although other codecs may work. Most image formats are supported.

This feature opens up your dome to any topic you might want to explore, even other subject areas besides astronomy. Free videos and images on countless topics are available on many websites, and you can also purchase third party pre-recorded planetarium shows.

Systems using the Digitarium CU-1 control unit output audio (for video soundtracks) through three audio jacks for full 5.1 channel surround sound (when your video file supports this). You supply a speaker system of your choice. For fixed systems, we can offer professional audio systems through Bowen Technovation.

Portable systems using the smaller Digitarium CU-S control unit support stereo output.

A video-in port allows you to project from a separate computer should you need to. This gives you complete projection control if you have special requirements.

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