Assertion: telescope | /r/HasProperty | constructed at observatory house
Facets:
value: between 1785
type: TEMPORAL
value: between 1789
type: TEMPORAL
value: in slough
type: LOCATION
Source sentences:
text: William Herschel's 40-foot telescope, also known as the Great Forty-Foot telescope, was a reflecting telescope constructed between 1785 and 1789 at Observatory House in Slough, England.