Assertion: dish radio telescope | /r/HasProperty | scanned in same way
Facets:
value: across of a section of sky
type: LOCATION
value: systematically
type: MANNER
Source sentences:
text: In order to produce the equivalent of a photograph the single-dish radio telescope has to be systematically “scanned” across of a section of sky in the same way that a TV image is produced by scanning an electron beam across the TV screen.