The new $2,000,000 telescope will have a 140-ft. paraboloid antenna (second in size only to the 250-ft. antenna being constructed in England) ...

A single five-element Yagi antenna was used with each of the 49, 91 and 173 Mc./s. receivers, and a twelve-foot paraboloid reflector antenna was used with the 492 Mc./s. receiver.

The radio telescope used for these observations has a half-power beam-width of 6.7 minutes of arc. The antenna reflector is an aluminium paraboloid, ...

Researchers at the Georgia Institute of Technology and the University of Tokyo are looking the 'hypar' origami for ways to leverage its structural properties.