The Astrogator is an electro-mechanical device or object standing 2.46 metres tall. Size of model is 420mm tall.


The Astrogator was inspired from observing some scrap medical plastic components in 1986. Instantly a mental image formed and a quick sketch was made of the essential elements. From this rough drawing, a detailed precision rendering was made.


The Astrogator consists of an upper caged cylindrical section capped by transparent hemispheres and sits within a tripod-like frame arrangement surrounding another caged cylindrical core-like component. On top is an illuminated beacon. The upper central unit has a transparent band by which a fibre optic lights can be seen running around. Within the lower transparent hemisphere is a conical-shaped disc which rotates when activated. The lower core has two ribbed sections surrounded by tubes. These sections are translucent and can be illuminated. At the base is a red light.


The Astrogator can be divided into several main sections – the upper section (with detachable acrylic hemispheres), the acrylic table-top, each of the three legs can be detached to reveal the lower core. Each section can be electrically connected to all the other sections, and powered from the mains.


The unit is thought to represent some kind of navigational device, hence the name “astrogator”. Alternatively, it could represent some kind of power unit.




·        Unusual tripod-like leg arrangement holding distinctly upper and lower elements.

·        Design is both ancient and futuristic in appearance, but not representative of any particular technology or time period.

·        Function of device is not immediately clear, there is no apparent control mechanisms or displays.

·        Appears to address a standing human operator or observer.

·        Centralised location or placement implied due to the fact that there is no front or back to unit.



The astrogator design was not premeditated or planned, but was conceived of instantaneously without any knowledge of what the object could represent.  


Conception by Jeffrey Siedler in 1986


Sydney , Australia .