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Glossary term: Radiotelescopio

Description: Los radiotelescopios reciben ondas de radio procedentes del espacio. Dependiendo de la longitud de onda de observación, pueden tener forma parabólica, similar a la de una antena parabólica con un receptor en el punto focal, o bien pueden presentar estructuras metálicas en forma de varilla, a veces denominadas antenas dipolo. Luego las señales se amplifican y se procesan mediante un ordenador o computadora. Un radiotelescopio puede consistir en una sola antena parabólica o en varias antenas conectadas entre sí para formar un interferómetro, en el que un ordenador especial llamado correlador combina las señales de los diferentes radiotelescopios para obtener información que luego puede procesarse y convertirse en una imagen. Observan principalmente ondas de radio, con frecuencias que oscilan entre unos 30 megahercios y 300 gigahercios, o entre 10 metros y 1 milímetro de longitud de onda. Los telescopios y receptores individuales están optimizados para regiones específicas dentro de esta banda. Algunas antenas parabólicas están optimizadas para observar luz con una longitud de onda ligeramente más corta en una región del espectro electromagnético conocida como el submilimétrico.

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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

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Panorama of the Parks Radio Telescope with blue sky and few thin clouds. The telescope looks like a giant satellite dish.

Parkes Radio Telescope

Caption: The 64m Radio Telescope at Parkes Observatory (New South Wales, Australia) is fully operantional since 1963 and continuously upgraded since. Also called "The Dish", it is run by the Commonwealth Scientific and Industrial Research Organisation (CSIRO). The telescope can be pointed at a part of the sky. The radio waves from this part of the sky are then reflected and focussed by the giant dish to a receiver at the focal point. The data from this receiver can then be analysed by astronomers.
Credit: David McClenaghan/CSIRO credit link

License: CC-BY-3.0 Creative Commons Atribución 3.0 No portada icons

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