Assertion: telescope's eyepiece | /r/CapableOf | act as magnifying lenses
Facets:
value: essentially
type: MANNER
Source sentences:
text: In the early days of telescopes, eyepieces were single pieces of glass that essentially acted as magnifying lenses that let you examine the image created at the focal plane by the objective lens or primary mirror.
text: This image may be recorded or viewed through an eyepiece (2), which acts like a magnifying glass.