Assertion: telescope's mirror | /r/HasProperty | curved
Facets:
Source sentences:
text: Most current large telescopes, including the VLT and the NASA/ESA Hubble Space Telescope, use just two curved mirrors to form an image.
text: Reflective telescopes work in a similar way to refractors but by reflecting, instead of bending, light using curved mirrors.
text: Refractor telescopes use lenses to magnify the image, while reflector telescopes use curved mirrors to magnify the image.
text: However, most telescopes today use curved mirrors to gather light from the night sky.
text: For reflecting telescopes, which use a curved mirror in place of the objective lens, theory preceded practice.
text: Scientists of the time knew of no way to avoid this problem with lenses, so they designed telescopes using curved mirrors instead.