Assertion: newtonian telescope's mirror | /r/CapableOf | focus incoming light rays
Facets:
value: to a single point
type: OTHER
Source sentences:
text: Different reflectors use different shapes of mirrors, The parabolic mirrors will focus all incoming light rays to a single point, The images from a parabolic mirror will have a defect called the coma, where images far from the center of the field of view are elongated, The spherical mirror surface is relatively easy to make but different parts of a spherical mirror have slightly different focal lengths, so, The images will be fuzzy.