Assertion: telescope's design | /r/HasProperty | a catoptrictelescope
Facets:
value: sometimes
type: TEMPORAL
value: since reflecting telescopes use mirrors
type: CAUSE
Source sentences:
text: Since reflecting telescopes use mirrors, the design is sometimes referred to as a "catoptric" telescope.
text: Since reflecting telescopes use mirrors, the design is sometimes referred to as a “catoptric” telescope.