Assertion: eyepiece | /r/HasProperty | expensive
Facets:
value: very
type: DEGREE
value: often
type: DEGREE
value: because of field
type: CAUSE
Source sentences:
text: Eyepieces that have very wide fields of view are often pretty expensive and they will not be "standard equipment" on any entry level telescope.
text: Since these eyepieces are inexpensive to make they can often be found on inexpensive telescopes and microscopes.
text: This eyepiece is quite expensive to manufacture in light of the nature of glass, and the requirement for all around coordinated concave and convex lenses to counteract internal reflections.
text: Because of the image quality and field of vision, this eyepiece can be very expensive.
text: These eyepieces are often large, heavy and expensive, but they will provide the best viewing experience for eyeglass users and those without eyeglasses.