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Product Catalogue: 0679 |
| A working model of the planetary system, which combined with a 'Star dome' makes an efficient, graphic and versatile aid for teaching basic astronomy. It comprises a circular base with a series of concentric rings for the model planets which revolve around the central Sun at their 'HELlOS' PLANETARIUM correct relative speeds, the Moon revolving around the Earth. Around the upper edge of the base is a calendar and a degree scale for setting the planetary positions. In addition, a zodiacal calendar is provided. The planets from Mercury to Saturn, can be positioned for any year and month by means of the degree scale on the rim of the base. The star domes [the one from the northern hemisphere is supplied with the planetarium] illustrate the position of stars and constellations, lines of right ascension and declination, the ecliptic and celestial equator. Supplied with teaching manual covering history, the Sun, planets, comets and space exploration as well as useful tips for demonstration. Complete with all accessories, and a 240V mains power unit, fitted with double insulation and thermal cut-out for overload protection, but without batteries. |
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