Assertion: refracting telescope | /r/HasAspect | lens
Facets:
value: at the front
type: LOCATION
value: typically
type: DEGREE
Source sentences:
text: Refracting telescopes typically have a lens at the front, then a long tube, then an eyepiece or instrumentation at the rear, where the telescope view comes to focus.
text: The basic refracting telescope has two lenses, The first lens is called the objective lens which is a convex lens that bends the incoming light rays to a focal point within the telescope, The second lens is called the eyepiece which takes the light from the focal point and spreads it out across the retina of your eye, It makes the object seem much closer than it really is.
text: -- A refracting telescope must have a lens, otherwise it's not a refracting telescope.