Assertion: telescope's lens | /r/CapableOf | reduce color aberrations
Facets:
value: in objective lenses
type: LOCATION
value: greatly
type: DEGREE
Source sentences:
text: The achromatic lens, which greatly reduced color aberrations in objective lenses and allowed for shorter and more functional telescopes, first appeared in a 1733 telescope made by Chester Moore Hall, who did not publicize it.