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Galaxiki Community BlogSubscribe via RSS Arecibo - The Largest Telescope Ever ConstructedMarch 18, 2008by joskirps The Arecibo Observatory operates the largest telescope ever constructed, using a 305m dish constructed inside the depression left by a karst sinkhole. The telescope is located about 9 miles (14 km) south-southwest from the town of Arecibo in Puerto Rico, although the observatory belongs to the United States and is operated by Cornell University under cooperative agreement with the National Science Foundation. The dish is the largest curved focusing dish on Earth, giving Arecibo the largest electromagnetic-wave gathering capacity. The receiver is located on a 900-ton platform which is suspended 150m in the air above the dish by 18 cables running from three reinforced concrete towers. <center>  </center>The platform has a 93 m long rotating bow-shaped track on which receiving antennas are mounted, this allows the telescope to observe any region of the sky. Puerto Rico's location near the equator allows Arecibo to view all of the planets in the solar system. Construction began in the summer of 1960, it started operating on November 1, 1963. Only a few months later, on April 7, 1964, it was used it to correctly determine the rotation rate of Mercury. In 1968 it confirmed the existence of neutron stars, in 1974 it discovered the first binary pulsar. In 1982, the first millisecond pulsar (spining 642 times per second) was detected by the Arecibo telescope, followed by the first directly imaged asteroid in 1989. The following year a pulsar with three orbiting planets was detected - these were the first extra-solar planets ever discovered. In 1994 the distribution of ice in the poles of Mercury was mapped and in January 2008 prebiotic molecules were reported after radio spectroscopy measurements of a distant starburst galaxy. Arecibo is also the source of data for the SETI@home distributed computing project and was used for the SETI Institute's Project Phoenix observations. In 1974, the Arecibo message, an attempt to communicate with extraterrestrial life, was transmitted from the radio telescope. The Arecibo telescope could also be seen in the James Bond movie "Golden Eye" and in the film "Contact".
2 Comments - Read comments - Leave a comment Skip Tucker said, on March 18, 2008: How this sort of thing is NOT considered exciting to so many people is one of the greatest mysteries of life. Heaven said, on February 10, 2010: The Arecibo Observatory is a radio telescope located close to the city of Arecibo in Puerto Rico. It is operated by Cornell University under cooperative agreement with the National Science Foundation. The observatory works as mcse test the National Astronomy and Ionosphere Center (NAIC) although both names are officially used to refer to it. NAIC more properly refers to the organization that runs both the observatory and associated offices at Cornell University.The observatory's 305 m radio telescope is the largest single-aperture telescope (cf. multiple aperture telescope) ever constructed. It carries out three major areas of research: radio astronomy, aeronomy (using both the 305 m telescope and the observatory's lidar facility), and radar astronomy itil test observations of solar system objects. Usage of the telescope is gained by submitting proposals to the observatory, which are evaluated by an independent board of referees.The telescope is visually distinctive and has been used in the filming of notable motion picture and television productions: as the villain's antenna in the James Bond movie GoldenEye exam 70-290, as itself in the film Contact, the The X-Files episode "Little Green Men", and the docu-drama Super Comet: After The Impact.[2] The telescope received additional international recognition in 1999 when it began to collect data for the SETI@home project. |
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