Professor of Aeronautics
Mt. San Antonio College
Unfortunately we only have a few cosmetically imperfect solar caps left from the plastic molded version that we used for long years.
Today we are using a glass-molded cap, because it is more durable. But this would require to modify the lamp holder of your planetarium - and it would be quite expensive to send the middle part of your planetarium (without the star globe) to us in Germany for doing the modification. So if you were to accept the plastic cap with a few dimples, we could send it to our US-distributor for Baader astronomical products (www.AlpineAstro.com) so that he could send it to you at an economical outlay of altogether US $ 25,-
Please let us know if this would be acceptible.
The Original: Baader Planetarium
The Baader Planetarium – the cornerstone of our company and worldwide the most successful Demonstration model for the mechanics of the heavens – produced for more than 50 years. re than 15.000 pieces have been delivered world-wide
The device consists of a celestial globe with 50 centimeters in diameter, made of Plexiglas - almost black - but transparent for the viewer in a darkened room.
An interesting effect here is that any observer can indeed see into the globe, and only see the black background on the other side with laterally correct stars, but does not perceive another person standing behind it! This creates a very strong spatial impression.
The celestial globe consists of two half-shells, the upper half is removable. Inside is an electrically driven Tellurium assembled, showing the circulation of the earth and moon around the sun.
You can demonstrate with the Baader Planetarium amongst other things the following astronomical facts:
- Earth's orbit around the sun, origin of the seasons
- Orbit of the moon around the earth
The emergence of the phases of the moon, full moon and new moon
- The development of solar and lunar eclipses
- Synodic and Sidereal Time
- The precession of the Earth's axis
- The visibility of the constellations, depending on the season
- The visibility of the constellations, depending on the location of the observer on the globe
- The positions of the inner planets, the projection of the starry sky and much more
By removing the solar sphere you get a pointed light source. In a darkened room or by using a projection dome the stars of the celestial globe can be projected
The globe is free to rotate in its holder, thus the stars for any date and location on Earth can be represented as a projected image.
Accessories for the Baader Planetarium
Projection domes with suspension (#2000100)
Geometric correct hemisphere, consisting of 8 sub-segments each 45 degrees of glass fiber reinforced polyester. Colour matt white interior, exterior gray. Self-supporting.
- Available in 2.5, 3.5, 4, 5 or 6 meters in diameter
- Wall thickness about 3 mm
- Number of segments 8
50 years – one device!