The key difference that make modern digital planeteria stand out from the traditional ones as we know them is that the former have a single, centrally located optoelectric projector that allows the audience to be fully immersed in a spherical projection of not only astronomical images but also popular science shows and videos, and scientific, artistic and visual performances. This is all possible because in digital planetaria images are built using multimedia projectors placed under the dome. Projector images create a uniform high-quality and high-resolution image on the spherical planetarium screen. As well as lighting effects, sound effects are produced, using multi-channel cinema audio system. The digital planetarium has the unquestionable advantage that it uses a ready-made and constantly growing library of presentations, shows and films. You can also create your own presentations and make them available on commercial terms to other planetariums around the world.