This is a projection screen for Sega Toys Homestar Pro Original home planetarium. It extends the possibilities of your planetarium! The disc is manufactured to a very high quality and specially designed for use with the Homestar Pro.
The La Silla Observatory is an astronomical observatory in Chile. It is in the Atacama Desert, Coquimbo Region, Chile at an altitude of 2400 metres. It is dry, flat and remote from any light and dust sources, but is still easily accessible. The European Southern Observatory (ESO) built and operates three telescopes at this site. There are a series of additional telescopes that are partly maintained by the ESO.
The 1.54-metre Danish National Telescope has been in use at La Silla since 1979. It has been completely overhauled in 1993 when it has been equipped with the Danish Faint Object Spectrograph and Camera instrument.
The red colour in this image is produced by a phenomena called airglow. This faint emission of light the night sky to never be completely dark, even without starlight and diffused sunlight. Various processes in the upper atmosphere, cause the airglow's red and green light.
This discs comes with a scenic disc showing the antennas of the nearby Atacama Large Millimetre/submillimetre Array. This makes everybody feel even more like a real scientist living and working in the Chilean desert.
What does 'Scenic' mean? These discs consist of two parts. The main disc shows the actual theme. There is also a second disc showing a foreground - for example trees. When the motor is on, only the main dial turns, while the foreground is stationary. This combination results in an attractive effect.
The first figure shows the disc with the main theme, the second figure shows the combination of the main theme and the foreground.