Assertion: reflecting telescope's mirror | /r/HasProperty | 5.0 meters
Facets:
value: in diameter
type: OTHER
value: inside the ring-like primary
type: LOCATION
Source sentences:
text: The Rubin Observatory primary mirror (M1) is 8.4 meters (28 ft) in diameter, the secondary mirror (M2) is 3.4 meters (11.2 ft) in diameter, and the tertiary mirror (M3), inside the ring-like primary, is 5.0 meters (16 ft) in diameter.