Assertion: focal ratio | /r/HasProperty | stop
Facets:
Source sentences:
text: Focal Ratio (f/stop)
text: Another way to calculate exit pupil is to divide the eyepiece focal length in millimeters by the telescope's focal ratio (f/stop).
text: Focal Ratio (f/stop)
text: Another way to calculate exit pupil is to divide the eyepiece focal length in millimeters by the telescope's focal ratio (f/stop).