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Radio Astronomy in Australia

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An explanation of how a radio telescope works, and how two or more radio aerials may be linked together as an "interferometer" to pinpoint more precisely the area from which radio signals are coming.

Several interferometers constructed in Australia between 1946 and 1958 are shown, including the Mills Cross. Their contribution to man's knowledge of radio stars, sunspots, and the extent of our own galaxy, is outlined.

Produced in 1958.

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15:19:29 | Title
15:20:05 | Sunset through clouds, starfields, stellar clusters, galaxy, MountStomlo optical telescope
15:21:00 | Various radio telescope antennae
15:21:15 | Neon signs at night
15:21:21 | Graphics - white light through prism showing separate colours, radiowaves, radio telescope action
15:22:70 | Radio telescope, control room, radio signals printout,
15:23:07 | Graphics - small radio telescopes linked Interferometer
15:23:29 | Sunrise Sydney Harbour entrance, radio telescope
15:23:35 | Graphics - radiowaves direct and reflected from sea
15:23:54 | Graphics - sun, radio signals, sunspots
15:24:13 | Potts Hill Reservoir, Sydney, interferometer, 36 receivers
15:24:33 | Graphics - Sun crossing receivers
15:24:44 | Output studied on printout, coin to show size comparison
15:25:06 | Crossed rating interferometer, 64 aerials in cross form, actionof polar axis
15:25:49 | Graphics - areas of radiowaves received, sun crossing sky, radiospots,sunspots
15:27:59 | Radio frequency spectrograph, 3 aerials track sun, signals on cathoderay tube receiver, time-lapse signals showing outbursts
15:29:18 | Graphics - sun particles from bursts
15:29:33 | Still - sketch of buildings, magnetic storms
15:29:50 | Graphics - Planets orbits around sun
15:30:01 | Researcher with graphic output
15:30:13 | Graphics - Jupiter's atmosphere
15:30:21 | Dover Heights radio telescope
15:30:32 | Graphics - rapid star movement, Stills - starfield, crab nebula
15:31:20 | Aerial - Mills Cross telescope, WS telescope dipole aerials, controlpanels and output
15:31:49 | Graphics - source of signals above earth
15:32:13 | Aerials on beam reconnected
15:32:36 | Radiostars plotted on sky map, Stills - crab nebula, galaxies spiralnebulae
15:34:01 | Train passing
15:34:16 | Graphics - wavelength changes, hydrogen clouds
15:35:05 | B/W Stills - spiral nebula, Clouds of Magellan, hydrogen clouds,starfield
15:35:53 | Radio telescope, Manchester England
15:36:00 | Artist impression of Parkes dish
15:36:10 | Radio antennae, starfields
15:37:04 | End