Assertion: refracting telescope | /r/HasProperty | rugged
Facets:
value: after initial alignment
type: TEMPORAL
Source sentences:
text: After initial alignment, refractor telescope are rugged.
text: Refractor telescopes are rugged i.e. they are capable of withstanding rough handling, and are strongly made.
text: Refractor telescopes are rugged.
text: There are not reflections or interruption of the light path, there is near permanent optical alignment, minimum maintenance, and long focal ratios can mean the use of longer focus, simpler and eyepieces, Refractor telescopes are rugged after the initial alignment their optical system is more resistant to misalignment than the reflector telescopes.