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Telescopes
A telescope is a device used to form images of distant objects. There are two kinds: an optical telescope uses lenses and is known as a refracting telescope or a refractor, and a reflecting telescope, which uses a mirror and is known as a reflecting telescope or a reflector. The earliest telescope was a refractor built by the Dutch eyeglass maker Hans Lippershey. This category is for questions related to telescopes, including using them to view distant planets and objects in space.
1,887 Questions
How did Newton solve the problem of using an eyepiece with a reflecting telescope?
== == Newton did not invent the reflecting telescope. The first reflecting telescope is credited to Niccolò Zucchi in 1616. In 1668, Isaac Newton made significant improvements to the design resulting in a much improved reflecting telescope that still bears his name, the "Newtonian reflector." He did it because the refracting (lens) telescopes of the day suffered severe color aberration. (Different focal lengths of different colours of light resulting in a blurred image because all the colours can't be brought into focus at the same time.) Reflecting telescopes do not suffer from color aberation and Newton's improvements made them effective observing instruments. Although the colour aberration of refractors was partially solved by the invention of the achromatic lens in 1733 Newton's design remains in use to this day.
Cloudy nights can be warmer than clear nights because clouds trap heat -?
Yes, that's correct. Clouds act as a blanket, reflecting and trapping heat back towards the Earth's surface. This phenomenon prevents heat from escaping into the atmosphere, leading to warmer temperatures at night.
Was it possible for Pocahontas to gaze at the stars through the telescope?
Possible, but unlikely. Pocahontas died in England in 1617, while the telescope was invented in the Netherlands around 1605. So it's not likely that she ever saw a telescope, much less gazed at the stars through one.
Can fossil fuels be made in laboratory?
Fossil fuels like coal, oil, and natural gas are formed from organic material over millions of years through natural processes. While it is theoretically possible to create fuels with similar properties in a laboratory using synthetic methods, it is not currently practical or cost-effective on a large scale due to the complex nature of fossil fuels' composition and the time it takes for them to form naturally.
The proposed National New Technology Telescope and the Very Large Telescope are both?
The National New Technology Telescope and the Very Large Telescope are both advanced astronomical observatories designed to provide detailed images and data of celestial objects. They boast cutting-edge technology and large mirror sizes to capture clear and high-resolution images of the universe. These telescopes are crucial tools for astronomers to conduct groundbreaking research and observations in the field of astronomy.
What is the function of the dish in a radio telescope?
The shape is a paraboloid. In a paraboloid, all waves that come from infinity (or from far, far away - this is practically the same for the geometrical considerations) will be reflected in such a way that they gather at a single point.
Why did the Hubble space telescope fail?
the initial problem was=== the reflecting (lens/mirror) was improperly ground due to the thickness of a 25 cent washer used in the grinding machine that made the lens. the problem was solved by insalling corrective (lenses/mirrors) shaped like pringles potato chips. sounds crazy but its true. bob winters hannacroix n y. there is a particular name for this shape but i cant remember it except that its l o n g.
Name the optical instruments in order from least to most sensitive?
camera ,microscope, telescope are some knids of optical instruments
Who is the Italian scientist that invented the telescope?
Galileo's Optic Tube News of the telescope's invention spread rapidly through Europe. By April 1609, three-powered spyglasses could be bought in spectacle-makers' shops on the Pont Neuf in Paris, and four months later there were several in Italy. They were made famous by an Italian professor and experimenter named Galileo Galilei in the summer of 1609 at the University of Padua near Venice. While Galileo did not invent the telescope, he did design and build telescopes with increasingly higher magnifying power for his own use and to present to his patrons. He was a skilled instrument maker, and his telescopes were known for their high quality. Galileo's first telescope was basically a tube containing two lenses. His first attempt was a three-power instrument; this was followed by one that magnified objects approximately nine times. He showed the latter device to the Venetian senate, hoping to impress them with its commercial and military potential. Observations with Galileo's telescope strengthened the new idea that the Earth and the planets circled the Sun. It also revealed multitudes of stars in the Milky Way and elsewhere. One seemed to see not a fixed sphere of stars, but a universe of stars extending outward to some vast and unknown distance, perhaps to infinity.
Galileo's telescopes Like the earlier Dutch versions, Galileo's refracting telescopes ("refractors") used lenses to bend, or refract, light. They featured a concave eyepiece lens and a convex objective lens. The telescope was fairly simple to make. Galileo, however, faced difficulties finding clear and homogenous glass for his lenses. The glass was full of little bubbles and had a greenish tinge (caused by the presence of iron impurities). This was a problem that troubled telescope makers for centuries. It was also hard to shape the lenses perfectly. The images of stars were blurry, and surrounded by color haloes. The limiting factor of these early refractors was their small field of view. Only part of the full Moon, for example, could be seen at one time. Galileo himself continued to improve his devices until they were over four feet long and could magnify up to thirty times.
Who invented the submarine telescope?
The submarine telescope was not invented by an individual but rather refers to a scientific concept of placing a telescope in an underwater observatory to observe celestial objects. This concept is still being developed and researched by scientists and engineers.
How many refracting telescopes are there in the world?
There are seven kinds of microscopes. These are the optical microscopes, X-ray microscopes, scanning acoustic microscopes, scanning helium ion microscopes, neutron microscopes, electron microscopes and scanning probe microscopes.
Why is the concept of an astronomer continuously peering through a telescope not valid today?
There are a number of reasons why the cartoon image of the astronomer peering through his telescope eyepiece is outdated.
1. The advent of film and then digital imaging has made it possible to do long exposures to see things that are invisibly faint to the eye.
2. The astronomer looking through the telescope has no way to accurately record what he sees.
3. Telescope platforms are in the cold, thin air at the tops of mountains. If the air in the observatory was heated, the heat shimmers would degrade the images.
4. Astronomers are people, too; they don't want to spend all of their nights freezing on mountaintops when they can be at home with their families.
5. With computer-controlled telescopes, digital imaging and the Internet, the astronomers can be at home at their universities in the valley and enjoy the social life, and still present last-night's observations on the big screens in their classrooms each afternoon.
If you cant observe the milkyway directly how do you know its structure and shape?
Scientists study the Milky Way using various methods, such as radio waves, infrared, and X-ray observations as well as mapping the distribution of stars and gas clouds. By combining data from these different techniques, they can infer the structure and shape of the Milky Way, including its spiral arms, central bulge, and disk. These methods allow scientists to build a comprehensive understanding of our galaxy.
When did Edwin Hubble invent the telescope?
Edwin Hubble was an astronomer who worked with Earth-based telescopes, and who died in 1953, before the launch of the first artificial satellite. The Hubble Space Telescope was named in his honor almost 40 years later.
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If anything can be said to be invented by Hubble, it is to be found in a few ideas that came out of a few discoveries he made such as the existence of the Universe.
Only at the turn of the century with the construction of gigantic telescopes of almost a meter in diameter was it possible to distinguish the blobs known as nebulae as being outside of our galaxy. In the 1920s Hubble's observations confirmed the existence of other galaxies in the universe outside of our own galaxy, an idea that existed, but was controversial and lacked evidence earlier. (Earlier, the universe was thought to be infinite, but mostly empty except for our own little neighborhood of a few billion stars in the Milky Way. As always, we were the center of the Universe.)
In the next years, Hubble expanded this with data from others to quantify the observation that the Universe was expanding. (Now called Hubble's Law.) This led, of course, to the first data supporting the Big Bang theory suggested in by Georges Lemaître in 1927.
Will Hubble still be used after the James Webb telescope in launched?
Yes, Hubble is expected to continue operating alongside the James Webb Space Telescope (JWST). While JWST will offer new capabilities in infrared observations, Hubble will continue to provide valuable data in visible, ultraviolet, and near-infrared wavelengths. Both telescopes will complement each other in their respective strengths.
Who took credit for inventing the telescope?
The invention of the telescope is commonly attributed to Hans Lippershey, a Dutch eyeglass maker, who applied for a patent for his device in 1608. However, other individuals such as Galileo Galilei and Thomas Harriot also made significant contributions to the development and improvement of the telescope around the same time.
How far away is a planet with oxygen?
Mercury: 48 million miles
Venus: 26 million miles
Mars : 33.9 million miles
Jupiter: 12 billion miles
Saturn: 1.2 billion miles
Uranus: 1.8 billion miles
Neptune: 2.68 billion miles
When will the hubble be decommissioned?
No further maintenance or upgrade of the Hubble Space Telescope is planned following the last work on it during 2009. It's hoped that Hubble will hold together and continue in operation until the Webb Space Telescope is launched in 2014.
What was the hubble space telescope named after?
The Hubble Space Telescope was named after the American astronomer Edwin Hubble, who played a crucial role in changing our understanding of the universe by demonstrating that galaxies are moving away from each other.
How far away is the hubble deep field object to earth?
Light telescopes with a diameter of 30-50 meters are currently planned; probably larger ones will be built in the future. I believe the largest radio telescope has a diameter of about 300 meters. On the other hand, it is possible to connect (through a technique called interferometry) telescopes that are thousands of kilometers apart, so they have the resolving power (but not the light-gathering capacity) of a single telescope that size.
Cheomseongdae is an astronomical observatory in Gyeongju, South Korea. Cheomseongdae means star-gazing tower in Korean. ---- Cheomsongdae is is an astronomical observatory in Gyeongju, South Korea. Cheomseongdae means stargazing tower in Korean. Cheomseongdae is one of the oldest surviving observatories in East Asia, and one of the oldest scientific installations on Earth.
What is the origin of the word Telescope?
The origin of the word telescope is from the Greek mathematician Giovanni Demisiani. "tele" means far and "scope" means to look or see. For more information see Related Links below.
greek
How does a infrared telescope work?
A refracting optical telescope uses two lenses, like magnifying glasses, to gather and focus the light carrying the images of the target that's being observed.
The first lens is called the primary lens. It's the larger of two lenses. It's located at the far end of the scope away from the eyepiece where the observer will sight the target. The target's light enters the scope through the primary lens. The Yerkes Observatory in Wisconsin USA is the largest refracting telescope. It's primary lens is a tad over 1 meter in diameter.
The eyepiece at the near end is the second lens. It takes that gathered light from the primary lens, and focuses and magnifies it even further.
So whatever the target might be is magnified many times over. First by the larger lens and then again by the smaller eyepiece lens. So, for example, if the primary lens magnifies by 5X and the eyepiece does it by 10X, the overall magnification is 50X. The two multiply.
Canopus, the second brightest star in the sky, is white or "yellowish-white".
On Club Penguin how do you exit the telescope?
you have to press the cross(X) button on the top right or left corner
