Assertion: eyepiece's field | /r/HasProperty | 50 ÷ 100
Facets:
Source sentences:
text: The true field would be 50 ÷ 100, or 0.5° - about the same apparent diameter as the full Moon.
text: The true field would be 50 ÷ 100, or 0.5°  about the same apparent diameter as the full Moon.