Assertion: radio telescope | /r/HasProperty | aimed to the right sky area
Facets:
value: correctly
type: MANNER
Source sentences:
text: When we want to record weak radio signals coming from Cassiopeia A (this is valid for all the radio sources except for the Sun) we have to be sure that the radio telescope is correctly aimed to the right sky area: in fact we can’t directly see the object we want to study.