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GALILEO GALILEI
GALILEO GALILEI
Arcetri, Tuscany, Italy (1564 - 1642)
Galileo Galilei was a Tuscan physicist, mathematician, astronomer, and philosopher who played a major role in the scientific revolution. His achievements include improvements to the telescope and consequent astronomical observations, and support for Copernicanism. His contributions to observational astronomy include the discovery of the four largest satellites of Jupiter and the observation and analysis of sunspots.
 

Disfrute estos perspicaces y educacionales videoclips obtenidos de más de 70 horas de entrevistas con las más notables figuras en astronomía tomadas durante la filmación del documental 400 Años del Telescopio.

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Butler Burton

Locating a radio observatory
Butler Burton - NRAO, Green Bank

When a site is sought for an optical telescope you want a site which is dark. That means far from cities, far from city lights. When a site is sought for a radio telescope you want the sky also to be dark. Darkness in radio terms means free from interference.

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Butler Burton

New frontiers in radio astronomy
Butler Burton - NRAO, Green Bank

Radioastronomy was the opening of a new scientific window. Whenever you open a new window you’re bound to be surprised. It can’t be otherwise. Serendipitous discoveries, surprises, are what happens.

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Butler Burton

Optical versus radio telescopes
Butler Burton - NRAO, Green Bank

An optical telescope has a mirror, which reflects the incoming radiation to focus, which is a camera, an electronic camera. A radio telescope has a parabolic surface which reflects the incoming radio radiation to focus which is collected by a radio camera, a receiver, and it further processes the images from that reception.

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Butler Burton

Collecting radio signals from space
Butler Burton - NRAO, Green Bank

The signals from space enters the Earth’s vicinity and those that are lucky enough to land on the surface of the GBT are reflected up to the focus. At the focus there’s a collection of receivers depending on which wavelength the astronomer wants to observe.

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Butler Burton

Serendipitous radio discoveries
Butler Burton - NRAO, Green Bank

In all branches of science, serendipitous discoveries occur. They can’t be predicted but they have certain things in common, and one is that, like Jansky, the people understand the equipment they’re dealing with and are prepared to accept the unexpected.

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