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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 the Hubble space telescope solve problems?
The Hubble Space Telescope has contributed to solving astronomical problems by providing high-resolution images and data on distant celestial objects, leading to new discoveries and better understanding of the universe. Its ability to capture clear images from above the Earth's atmosphere has allowed scientists to study phenomena such as black holes, dark matter, and the expansion of the universe.
A reflecting telescope uses a curved mirror to concentrate the light from distant stars, and is a very useful technique. There are very clever techniques and technicians, which can produce a mirror perfect over all its area, to within part of the wavelength of light!!
The alternative method of using a glass lens, suffers from various difficulties, such as distortion and loss of light.
You do not ordinarily consider focus in an astronomical telescope, for all the stellar objects are essentially at infinity.
How many years is 587 light years?
Light years is a measure for distance, the distance light travels in one year.
For the light to travel 587 light years, it takes 587 years.
What is the best telescope of for a beginner in the UK under 1000 pounds?
Hi. Well, I'm from America, so I'm not completely sure about this.
Can this help you?
The Skyliner-200P 203mm (8") Dobsonian Telescope, about half way down this page, £299:
Many beginners have bought that one and thought that it was perfect.
For more advanced information, read Phil Harrington's Star Ware, 4th edition (Wiley).
Buy from a store which specializes in telescopes and astronomy, either locally or online; don't buy from department stores, discount stores or eBay as mostly what they sell is junk. Find your local astronomy club and try out different telescopes at one of their star parties:
http://www.skyandtelescope.com/community…
I strongly recommend that beginners steer clear of astrophotography until they have learned their way around the sky. Astrophotography is by far the most expensive and difficult area of amateur astronomy.
Many people who buy telescopes have no idea how to find interesting things to observe. A good introduction to finding things is NightWatch by Terence Dickinson (Firefly). A more advanced book is Star Watch by Phil Harrington (Wiley).
How did Hubble space telescope affect the world?
The Hubble Space Telescope (HST) is a space telescope that was carried into orbit by a Space Shuttle in 1990 and remains in operation. A 2.4 meter (7.9 ft) aperture telescope in low Earth orbit, Hubble's four main instruments observe in the near ultraviolet, visible, and near infrared. The telescope is named after the astronomer Edwin Hubble.
Hubble's orbit outside the distortion of Earth's atmosphere allows it to take extremely sharp images with almost no background light. Hubble's Ultra Deep Field image, for instance, is the most detailed visible-light image ever made of the universe's most distant objects. Many Hubble observations have led to breakthroughs in astrophysics, such as accurately determining the rate of expansion of the universe.
Although not the first space telescope, Hubble is one of the largest and most versatile, and is well known as both a vital research tool and a public relations boon for astronomy. The HST was built by the United States space agency NASA, with contributions from the European Space Agency, and is operated by the Space Telescope Science Institute. The HST is one of NASA's Great Observatories, along with the Compton Gamma Ray Observatory, the Chandra X-ray Observatory, and the Spitzer Space Telescope.
Space telescopes were proposed as early as 1923. Hubble was funded in the 1970s, with a proposed launch in 1983, but the project was beset by technical delays, budget problems, and the Challenger disaster. When finally launched in 1990, scientists found that the main mirror had been ground incorrectly, significantly compromising the telescope's capabilities. However, after a servicing mission in 1993, the telescope was restored to its intended quality.
Hubble is the only telescope designed to be serviced in space by astronauts. Between 1993 and 2002, four missions repaired, upgraded, and replaced systems on the telescope, but a fifth mission was canceled on safety grounds following the Columbia disaster. However, after spirited public discussion, NASA administrator Mike Griffin approved one final servicing mission, completed in 2009. The telescope is now expected to function until at least 2014. Its scientific successor, the James Webb Space Telescope (JWST), is to be launched in 2018 or possibly later.
Do hubble telescopes only uses visible light?
No, Hubble Space Telescope uses a variety of wavelengths to observe the universe, including ultraviolet, visible, and near-infrared light. This allows it to capture a wide range of astronomical phenomena and provide a more comprehensive understanding of the cosmos.
An observatory is a place that uses telescopes and scientific equipment for astronomical research. Observatories are often located in remote and dark locations to minimize light pollution and atmospheric interference.
Is it better to have a telescope with a high resolving power or a high magnification explain why?
It is generally better to have a telescope with high resolving power rather than high magnification. Resolving power determines the ability to distinguish fine details in an image, while magnification simply increases the size of the image. High resolving power provides sharper and more detailed images, making it more useful for observing faint or distant objects in the night sky.
How is a radar and a telescope similar?
There is little or no similarity.
A radar is active (it radiates energy).
A telescope is passive (It relys on incoming energy)
The only thing I can think of, is that you point both towards an object and get some sort of information from it.
What do you turn the telescope to on shrink ray?
On a shrink ray telescope, you would typically turn the focusing ring to adjust the magnification and bring the target into sharper focus. This allows you to zoom in and view objects in closer detail.
What would life be without telescopes?
Without telescopes, our understanding of the universe would be limited to what we can observe with the naked eye. We would have a smaller understanding of the vastness of the cosmos, the nature of celestial bodies, and our place in the universe. Science and astronomy would be severely hindered without the ability to observe distant objects and phenomena.
What new telescope is nasa going to launch when the hubble space telescope falls back to earth?
The James Webb Space Telescope is scheduled for launch in 2018.
The Webb telecope is not a direct replacement for the Hubble.
The Hubble has been so reliable since its launch in April, 1990, that
it's expected to function through 2014, and possibly as long as 2020.
What is the best classification for a natural satellite?
The best classification for a natural satellite is based on the object it orbits. For example, Earth's moon is classified as a natural satellite because it orbits Earth. Natural satellites can also be classified based on their size or composition.
What landmark is found west of the reflecting pool?
The Washington Monument is located west of the reflecting pool in Washington, D.C.
Why astronomers uses telescope if you can see the planet by naked eyes?
With a telescope, you can see a lot more detail on the planets surface. Without a telescope you can only see bright dots, like surrounding stars, but with a telescope you can make out more - you can see the rings of Saturn for example of the bands and red spot on Jupiter.
How much does a telescope that can see neptune cost?
Telescopes that can see Neptune typically range in price from a few hundred to several thousand dollars, depending on the quality, size, and features of the telescope. High-quality telescopes with advanced features will generally cost more.
Why would you use telescopes to see planets?
Telescopes allow us to see planets in greater detail, revealing their features such as surface markings, moons, and rings. They also help astronomers study planetary atmospheres, temperatures, and compositions, providing valuable information about these celestial bodies. Telescopes enable us to observe planets from great distances and gather data that may not be possible with the naked eye.
firstly you should know about it that what is a martian...actually a martian is that person which live on mars....a man can be a martian as i am a martian.....as you all know science is so vast and is now at high lebel of technology.many of mars rovers are gong to mars by NASA..which take the names and pics of the persons on mars and make them a martian and add them in the name of istory.in the result of which they indicate a certificate too to the person which have ability to be a martian.
What kinds of telescopes are used to see stars in visible light?
Refracting telescopes and reflecting telescopes are commonly used to observe stars in visible light. These telescopes utilize lenses or mirrors to gather and focus light, allowing astronomers to view stars with clarity and detail.
Can you see Antares in a telescope?
Antares is the 16th brightest star in all the heavens, the 11th brightest normally visible from most heavily populated regions of the Northern Hemisphere. It is a bright orangish star, the brightest star in the fishhook-shaped constellation of Scorpius (not "Scorpio"), and is due south at roughly midnight (standard time) on May 30. The farther south you are the better, but at the time of culmination (midnight May 30), Antares is easily visible to the south from all of the continental US and most of Canada and Europe. Nearly 40 degrees high in Miami (at best), Antares is still easily visible -- at times -- from Calgary -- but doesn't even get above the horizon in Fairbanks.
Good telescopes don't use glass lenses for magnification, because they refract different colors is slightly different angles (known as prism effect), but they use spherical mirrorsinstead. Telescopes with lenses have the advantage of being smaller, cheaper and lighter.
Therefore refracting telescopes use lenses, and reflecting telescopes use mirrors.
Adaptive optics is the process used by telescopes on Earth to overcome the blurring effect of the atmosphere. It involves using deformable mirrors to correct for distortions in real time, resulting in sharper images of astronomical objects.
Is it true that the clearest images of objects in deep space are produced by a telescope in space?
Yes, telescopes in space, such as the Hubble Space Telescope, are able to capture extremely clear images of objects in deep space. These telescopes are not affected by the distortion caused by Earth's atmosphere, resulting in sharper and more detailed images compared to ground-based telescopes.
How did telescopes improve our knowledge of the universe?
Technology can provide the motivation and direction for scientific research as well as the tools to carry it out.
New technology often requires new understanding; new investigations often require new technology
become more aware that telescopes magnify the appearance of some distant objects in the sky, including the moon and the planets.
The number of stars that can be seen through telescopes is dramatically greater than can be seen by the unaided eye.
What type of data does a refracting telescope collect?
A refracting telescope collects light data, which is then focused and magnified by the curved lenses or mirrors inside the telescope. This light data allows astronomers to observe distant objects such as stars, planets, and galaxies.
