Assertion: newtonian telescope's mirror | /r/CapableOf | collect the light
Facets:
Source sentences:
text: The primary mirror will collect and focus the light, and that produces the image you can see through the eyepiece.
text: The primary mirror collects light.
text: Larger mirrors collect more light and are brighter and sharper.
text: The Gregorian telescope consists of two concave mirrors; the primary mirror (a concave paraboloid) collects the light and brings it to a focus before the secondary mirror (a concave ellipsoid) where it is reflected back through a hole in the centre of the primary, and thence out the bottom end of the instrument where it can be viewed with the aid of the eyepiece.