Assertion: telescope's length | /r/HasProperty | equal
Facets:
value: to the focal length
type: OTHER
value: to the telescope’s focal ratio
type: OTHER
Source sentences:
text: Its length is equal to the sum of the focal lengths of the objective and eyepiece, and its angular magnification is -f
text: The effective focal length of the telescope and the overall physical length of Mak-Newt telescopes are about equal to the focal length.
text: The effective focal length of the telescope and the overall physical length of Mak-Newt telescopes are about equal to the focal length.
text: The focal length is equal to the telescope’s focal ratio (f/number) multiplied by the diameter of the primary optic, or aperture.