Arecibo

The Arecibo Radio Telescope – Looking for Extraterrestrial Signals

The Arecibo Radio Telescope – Looking for Extraterrestrial Signals

On November 1, 1963, the Arecibo radio telescope, by that time the earth‘s largest radio telescope, has been inaugurated in Arecibo, Puerto Rico. It is operated by the company SRI International under cooperative agreement with the National Science Foundation and is also called the National Astronomy and Ionosphere Center, although “NAIC” refers to both the observatory and the staff that operates it. Construction and Functionality The Arecibo telescope was built between the…
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James Gregory and the Gregorian Telescope

James Gregory and the Gregorian Telescope

In November 1638, Scottish mathematician and astronomer James Gregory was born. Gregory described an early practical design for the reflecting telescope – the Gregorian telescope – and made advances in trigonometry, discovering infinite series representations for several trigonometric functions. James Gregory – Youth and Education James Gregory was born at Drumoak, Aberdeenshire, UK, the youngest of the 3 children of John Gregory, an Episcopalian Church of Scotland minister. Initially he was educated at…
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