The history of the planetarium began with the desire to depict the course of the planet. A first planetary observation machine known as „Orrery“ was used until the end of the 19th century. This is a mechanical device that represents the movement of the planets on their way around the sun.
The physicist Walter Bauersfeld developed the first projection planetarium in 1919 on behalf of the optics company Carl Zeiss Jena. Even today, the Jenenser Haus invites visitors from all over the world to view the universe. Those interested can expect a full-dome projection and perfect 3D sound in Jena. Thematically, programs are offered throughout the year. Lovers of the planetarium should not miss this experience.

The immobile projection planetarium

It requires a dome-shaped building. Inside are on the hemispherical blanketprojected images of the starry sky with the help of a projector. Here, the movements of the celestial bodies can be displayed at any time of day or night and in any season. Tracking the paths of sun, moon and stars – that’s possible in the projection planetarium. Also, a specific location can be specified. Thus, the projection planetarium clearly differs from the observatory: Here, only the „real“ starry skybe amazed.
Currently, however, projection planetary scenarios can do much more. They have become event locations with an adventure character. Perfect sound, the use of laser technology, headlamps and fog machines – all this is now possible and ensures a corresponding atmosphere.

The mobile planetarium

It does not need a building. A mobile one planetarium can consist of an inflatable dome and a projector. In the meantime, even the well-known „projector“ can contribute to the projection: the digital one planetarium is born .
Connoisseurs know something about the name Takayuki Ohira. The Japanese is known worldwide as the developer of portable planetariums. Together with the company Sega Toys he developed in 2006 the first home planetarium called „Sega Homestar“. In the size of a handbag, the viewer expected more than 10,000 stars, which can be projected on the wall or ceiling.

On planetarium for home

At home nobody has to do without a starry sky. Sega Toys has further developed and made its product affordable. Only 800 grams, and equipped with ultra-bright white light, is the current product.
Romantics beware: the home planetarium Sega Homestar Pro / Star Theater transforms the ceiling of the living room into a sky filled with up to 60,000 twinkling stars. Interchangeable projection screens provide a real night sky and also on shooting stars must not be waived. The Milky Way divine – no problem. Even constellations can be detected. Relax in peace and recharge your batteries or take care of falling asleep in the nursery – it works with this device. And if then someday the (adult) viewer should overcome the fatigue: The device can per timeron and off, by the way, in the nursery. According to the manufacturer, the device is suitable for children over the age of six.

Conclusion

An immobile planetarium offers a wide range of interesting and interesting facts. Also events await the visitor. Nevertheless, you do not have to do without the universe in your own home.