HELIOS ORRERY & NOTHERN STAR DOME

The Helios Planetarium gives a clear visualisation of the six classical planets (Mercury – Saturn) orbiting at their correct relative speed and stars remaining in their positions in the sky include the electric geared orrery and star dome and enable you to study the following topics:

The Planets in their orbits (length of a year, inferior and superior planets)

The phases of Venus

The Moon and its phases (external light source required)

Eclipse basics

Time – solar, sidereal and G.M.T.

The ecliptic and the Zodiacal constellations

How the planets appear to move against the night sky

Use of the Helios outside at night – where should the stars appear in the sky?

With the large Earth and Moon accessories that are included in versions 0150 and 0151 you can also watch as the Earth rotates on its axis while the Moon orbits it every 29.5 ‘days’. Using an external light source (torch, projector), the larger size of Earth and Moon enables you to demonstrate the following events much more clearly:

Day and night

Shadows and the seasons

The Moon’s month, phases and eclipses

The Pole Star, circumpolar stars and a nocturnal

The Moon and stars from different positions on Earth

The tides

Space travel
supplied with a star dome for the northern hemishpere