Helios Planetarium

107.00 - 617.00 each

This geared electric orrery with star dome is a delight for keen astronomers of all ages and is available as three main versions.

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Helios Orrery & Northern Star Dome
Product Code: 0142 In stock
1-4
5+
£501.00 each
£475.95 each
Helios Planetarium - Northern Stars (with large Earth and Moon accessories)
Product Code: 0150
1-4
5+
£557.00 each
£529.15 each
Helios Planetarium - Southern Stars (with large Earth and Moon accessories)
Product Code: 0151 Made to order in 1-5 days
1-4
5+
£617.00 each
£586.15 each
Extra dome for southern hemisphere
Product Code: 0159 In stock
1-4
5+
£107.00 each
£101.65 each
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.


All versions of the model (0142, 0150 and 0151) 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


Items 0142 and 0150 are supplied with a star dome for the northern hemishpere. Product reference 0151 is supplied with a star dome for the southern hemishpere.


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