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George Ellery Hale – Large Telescopes and the Spectroheliograph

George Ellery Hale – Large Telescopes and the Spectroheliograph

Tabea Tietz
On June 29, 1868, American solar astronomer George Ellery Hale was born. He is best known for his discovery of magnetic fields in sunspots, and as the leader or key figure in the planning or construction of several world-leading telescopes, including the 200-inch Hale reflecting telescope at Palomar Observatory. Like buried treasures, the outposts of the universe have beckoned to the adventurous from immemorial times. Princes and potentates, political or industrial, equally…
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astronomy
The Hale Telescope at Palomar Observatory

The Hale Telescope at Palomar Observatory

Tabea Tietz
On January 26, 1949, the Hale telescope at Palomar Observatory sees first light under the direction of Edwin Hubble,[4] 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…
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astronomy
To be or Not to be a Planet – Eris, the planet of Discord

To be or Not to be a Planet – Eris, the planet of Discord

Harald Sack
On October 21, 2003, a photograph of the nocturnal sky was taken, where almost 2 years later, in January 2005, evidence was raised that there might be a 10th planet at the borders of our solar system: Eris, located in the Kuiper Belt and named after the Greek goddess of discord. And discord it should be, because Eris as a planet is rather small and astronomers were arguing, whether it is a…
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