Assertion: telescope | /r/HasProperty | built
Facets:
Source sentences:
text: In 1952, Hans Wolter outlined 3 ways a telescope could be built using only this kind of mirror.
text: Even larger telescopes are built to collect light at longer wavelengths — radio waves.
text: The high-tech camera can see very faint objects, but the one on the telescope when it was first built was uncooled and did not have the sensitivity we wanted.
text: Magnifying a blurred image makes it bigger, but not clearer, so the priority when telescopes are built is to have the greatest light-gathering power possible.
text: In 1952, Hans Wolter outlined 3 ways a telescope could be built using only this kind of mirror.