Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Tools and Equipment (hierarchy name)
5. equipment
6. [equipment by profession or discipline]
7. [equipment for science and technology]
8. scientific instruments
9. astronomical instruments

Anotations

Scope note:

Projectors for use in planetaria which are comprised of complex systems of motor drives, fibre optics, and lenses, meant to display elements of the Solar System and the Milky Way in their precise, current locations among the stars, and to reproduce celestial movement in the future, as well as in the past.