Assertion: telescope's mirror | /r/HasProperty | aluminized
Facets:
value: front-surface
type: LOCATION
value: on the corrector
type: LOCATION
value: usually
type: TEMPORAL
Source sentences:
text: The large primary mirror and the elliptical secondary mirror of your telescope are front-surface aluminized and over-coated with hard silicon dioxide, which prevents the aluminum from oxidizing.
text: It uses a thick meniscus-correcting lens with a strong curvature and a secondary mirror that is usually an aluminized spot on the corrector.
text: The large primary mirror and the elliptical secondary mirror of your telescope are front-surface aluminized and over-coated with hard silicon dioxide, which prevents the aluminum from oxidizing.