telescope

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…
Read more
Lyman Spitzer and the Space Telescope

Lyman Spitzer and the Space Telescope

On June 26, 1914, American theoretical physicist, astronomer and mountaineer Lyman Strong Spitzer was born. Researching in star formation and plasma physics, he is probably best known for being the first to conceive the idea of telescopes operating in outer space. Thus, he is also the namesake of NASA’s Spitzer Space Telescope. Well mountaineer and astronomer at the same time, I guess we never had a fellow like Lyman Spitzer up to…
Read more
William Parsons and his Very Large Telescopes

William Parsons and his Very Large Telescopes

On June 17, 1800, Irish astronomer William Parsons, 3rd Earl of Rosse, was born. As an astronomer, he had several telescopes built, among them his 72-inch telescope, built in 1845 and colloquially known of as the “Leviathan of Parsonstown“, which was the world’s largest telescope, in terms of aperture size, until the early 20th century. In 1848, he found and named the Crab Nebula (because he thought it resembled a crab), by which name…
Read more
Simon Marius and his Astronomical Discoveries

Simon Marius and his Astronomical Discoveries

On January 20 (or January 10 according to the old Julian calendar), 1573, German astronomer Simon Marius was born. Marius was pupil of Tycho Brahe, one of the earliest users of the telescope and the first in print to make mention the Andromeda nebula. He studied and named the four largest moons of Jupiter that he claimed to have them discovered independently and even before Galileo. Simon Marius’ Early Years Simon Marius was…
Read more
Jean Picard and his Love for Accuracy

Jean Picard and his Love for Accuracy

On July 21, 1620, French astronomer, cartographer and hydraulic engineer Jean-Félix Picard was born. He is regarded as the founder of modern astronomy in France. He introduced new methods, improved the old instruments, and added new devices, such as Huygens‘ pendulum clock to record times and time intervals. Background Jean Picard Jean-Félix Picard was born as a son of a bookseller and was allowed to study at the Jesuit Collège Royal Henry-Le-Grand, which…
Read more
David Rittenhouse and the Transit of Venus

David Rittenhouse and the Transit of Venus

On April 8, 1732, American astronomer David Rittenhouse was born. He was an early observer of the atmosphere of Venus. For observations for the transit of Venus on 3 June 1769, he constructed a high precision pendulum clock, an astronomical quadrant, an equal altitude instrument, and an astronomical transit. Besides being an astronomer, he was also inventor, clockmaker, mathematician, surveyor, scientific instrument craftsman and public official as first director of the United States Mint.…
Read more
The Hale Telescope at Palomar Observatory

The Hale Telescope at Palomar Observatory

On January 26, 1949, the Hale telescope at Palomar Observatory sees first light under the direction of Edwin Hubble,[3] becoming the largest aperture optical telescope (until BTA-6 was built in 1976). George Ellery Hale George Ellery Hale was a solar astronomer, who was born and grew up in Chicago, Illinois [5]. He studied at MIT, Harvard and in Berlin. He is mostly known for his invention of the spectrohelioscope during his time at…
Read more
Galileo Galilei and his Telescope

Galileo Galilei and his Telescope

On August 25, 1609, Galileo Galilei publicly demonstrated his newly built telescope to Venetian lawmakers. Besides its astronomical value Galileo‘s telescope was also a profitable sideline for him selling telescopes to merchants who found them useful both at sea and as items of trade. Galileo published his initial telescopic astronomical observations in March 1610 in a brief treatise entitled Sidereus Nuncius (Starry Messenger). Galileo Galilei Education and Early Career Galileo Galilei came from an…
Read more
Sir William Herschel and the Discovery of Uranus

Sir William Herschel and the Discovery of Uranus

On March 13, 1781, Sir William Herschel for the first time observed planet Uranus while in the garden of his house at 19 New King Street in the town of Bath, Somerset, England (now the Herschel Museum of Astronomy), but initially reported it (on April 26, 1781) as a “comet“. “A knowledge of the construction of the heavens has always been the ultimate object of my observations…” – William Herschel, Astronomical Observations relating…
Read more
Joseph von Fraunhofer and the Solar Spectrum

Joseph von Fraunhofer and the Solar Spectrum

On March 6, 1787, German optician and physicist Joseph Fraunhofer – later enobled Ritter von Fraunhofer – was born. He is known for the discovery of the dark absorption lines known as Fraunhofer lines in the Sun‘s spectrum, and for making excellent optical glass and achromatic telescope objectives. Moreover, he is the name giver for the German Fraunhofer Society for the advancement of applied research. “In all my experiments I could, owing to…
Read more
Relation Browser
Timeline
0 Recommended Articles:
0 Recommended Articles: