Foil-lined foam insulation board, scraps of lumber, and a paint-thinner can hardly sound like the tools of a radio astronomer ... and that starts with a horn antenna to collect the weak signal.

The Dominion Radio Astrophysical Observatory near Penticton sometimes gives tours to groups from local schools.

He knew the Holmdel antenna would also make a great radio telescope and was dying to use ... It wasn't even the pigeons living in the big, horn-shaped antenna. Penzias and Wilson kicked them ...

This is the first application of this calibration method to a single-dish radio telescope ... within. The horn was not designed to precisely match the beam of the telescope. We choose the default ...

Our observatory sometimes gives tours to groups from local schools. These tours often include demonstrations to help show what radio astronomy is all about. One of the devices that is ...

He knew the Holmdel antenna would also make a great radio telescope and was dying to use ... It wasn't even the pigeons living in the big, horn-shaped antenna. Penzias and Wilson kicked them ...