Assertion: large telescope | /r/CapableOf | make composite mirror
Facets:
value: slightly
type: DEGREE
value: over 10 m
type: OTHER
Source sentences:
text: The next-largest telescopes currently in use are the Keck Telescopes, the Gran Telescopio Canarias and the Southern African Large Telescope, which each use small hexagonal mirrors fitted together to make a composite mirror slightly over 10 m (33 ft) across.