Introduction
Telescope were by far the most important invention in astronomy. With the naked eye, early astronomer could see only a few thousands of star in the sky in the night sky. However when Galileo first turned his homemade telescope to the skies, he found that he could see craters on the moon, the stars in the milky way and even four moons orbiting Jupiter.
Early Telescopes
The most important revolution in astronomy came in 1608 when the Dutch spectacle-maker Hans Lippershey invented the first telescope. It was a simple design that only magnified a small number of times. However the idea spread like wildfire across Europe. Galileo Galilei used the design to produce the first astronomical telescope a year later (Shown above). His telescope was not much powerful than Lippershey's and no more powerful than a pair of modern binoculars. However, through it Galileo discovered many amazing things about the Solar system including Saturn Rings and four of Jupiter's Moon.
Some More Facts
1) When Galileo discovered four moons orbiting Jupiter, he began a process that revolutionised the way people thought about the Solar System. Everything did not, after all orbit the earth.Could it really be at the centre of the Universe.
2) The main image in a reflecting telescope is formed in the main mirror. A Secondary mirror is needed to redirect this image to the viewer.
3) The Secondary mirror reflects the light of the main image to an eyepiece, or to data-recording equipment.
4) Light from objects in space enters here and is collected by the main mirror.
5) Refracting telescopes use large lenses that are bery heavy and are therefore limited in size. The mirrors in a reflector telescope can be supported from the black and made up of segments.
6) Refracting Telescope use thick lenses that absorb some of the light from faint objects. Lenses also focus different parts of the light spectrum at the different points, which can blur images and make the difficult to view. As reflecting telescopes do use lenses, they do not disort light in the same way.
How The Telescope Works
They are two different types of astronomical telescope. reflectors and refractors. Both work by capturing as much as light possible from distant objects such as planets and stars and directing that light to the human eye, or to data-recording equipments such as computers. Refractors Telescope use lenses to capture light, which is then focussed into an image by second lens. Binoculars usually consist of two refracting telescope side by side. Most professional astronomers prefer to use reflector telescopes, which have curved mirrors to capture light. The main lenses of all telescopes have a much larger surface than the human eye, which means that more light can be collected, and objects can be seen more clearly.
Modern Telescope
Astronomy today relies on computers such as on telescopes. Data collected by the telescopes. Data collected by telescopes and satellite dishes worldwide is processed by computers to produce images that can be stored and studied at leisure. Telescopes themselves are becoming bigger and therefore more powerful. The twin keck telescopes , built on the 4,200-meter high summit of an extinct hawaiian volcano, are the largest light-detecting telescopes in the world. The telescopes themselves are 8-storeys tall, with mirrors 10-meters wide.
Telescope were by far the most important invention in astronomy. With the naked eye, early astronomer could see only a few thousands of star in the sky in the night sky. However when Galileo first turned his homemade telescope to the skies, he found that he could see craters on the moon, the stars in the milky way and even four moons orbiting Jupiter.
Early Telescopes
The most important revolution in astronomy came in 1608 when the Dutch spectacle-maker Hans Lippershey invented the first telescope. It was a simple design that only magnified a small number of times. However the idea spread like wildfire across Europe. Galileo Galilei used the design to produce the first astronomical telescope a year later (Shown above). His telescope was not much powerful than Lippershey's and no more powerful than a pair of modern binoculars. However, through it Galileo discovered many amazing things about the Solar system including Saturn Rings and four of Jupiter's Moon.
Some More Facts
1) When Galileo discovered four moons orbiting Jupiter, he began a process that revolutionised the way people thought about the Solar System. Everything did not, after all orbit the earth.Could it really be at the centre of the Universe.
2) The main image in a reflecting telescope is formed in the main mirror. A Secondary mirror is needed to redirect this image to the viewer.
3) The Secondary mirror reflects the light of the main image to an eyepiece, or to data-recording equipment.
4) Light from objects in space enters here and is collected by the main mirror.
5) Refracting telescopes use large lenses that are bery heavy and are therefore limited in size. The mirrors in a reflector telescope can be supported from the black and made up of segments.
6) Refracting Telescope use thick lenses that absorb some of the light from faint objects. Lenses also focus different parts of the light spectrum at the different points, which can blur images and make the difficult to view. As reflecting telescopes do use lenses, they do not disort light in the same way.
How The Telescope Works
They are two different types of astronomical telescope. reflectors and refractors. Both work by capturing as much as light possible from distant objects such as planets and stars and directing that light to the human eye, or to data-recording equipments such as computers. Refractors Telescope use lenses to capture light, which is then focussed into an image by second lens. Binoculars usually consist of two refracting telescope side by side. Most professional astronomers prefer to use reflector telescopes, which have curved mirrors to capture light. The main lenses of all telescopes have a much larger surface than the human eye, which means that more light can be collected, and objects can be seen more clearly.
Modern Telescope
Astronomy today relies on computers such as on telescopes. Data collected by the telescopes. Data collected by telescopes and satellite dishes worldwide is processed by computers to produce images that can be stored and studied at leisure. Telescopes themselves are becoming bigger and therefore more powerful. The twin keck telescopes , built on the 4,200-meter high summit of an extinct hawaiian volcano, are the largest light-detecting telescopes in the world. The telescopes themselves are 8-storeys tall, with mirrors 10-meters wide.
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