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
10. [temporary alphabetical list: astronomical instruments]

Anotations

Scope note:

Telescopes that use multiple glass lenses which refract light; the objective lenses are the first lenses through which light passes, and the eyepiece lenses are located behind the focal plane, allowing for viewing of the magnified images. Today, refracting telescopes are used for viewing objects in the solar system that are closer to Earth.