Assertion: newtonian telescope's mirror | /r/HasProperty | cheaper to make
Facets:
value: a lot
type: DEGREE
value: compared to parabolic mirrors
type: OTHER
Source sentences:
text: Newtonian Telescopes have a big advantage over telescopes with lenses such as refractors and Cassegrain telescopes, as mirrors are a lot cheaper to make than lenses.
text: Dobsonian/Newtonian telescopes have a big advantage over telescopes with lenses such as refractors and Cassegrain telescopes, as mirrors are a lot cheaper to make than lenses.
text: The spherical mirrors are cheaper to make compared to parabolic mirrors, but they suffer from spherical aberration, and that’s why most Newtonian reflectors are using more expensive parabolic mirrors.
text: Because mirrors are cheaper to make than lenses, it is a better option when considering price vs. aperture.