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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
Is there a place named after Edwin Hubble?
Apart from a school and a planetarium.
- An asteroid.
- A crater on the Moon
- (My favorite) the Edwin Hubble Highway.
Where is the telescope on Poptropica?
You will need to shrink. When you shrink, go to Cj's bedroom. Go to the end of her room on the left. The telescope will be there. I played this island tons of times. Friend me. i am Galla27. Im rather an angel with wings, or a girl with a zebra dress, scarf, and sunglasses. I hope this helps you. It helped me. Buh byeeeeeeeeee. XD. -Galla27
What telescopes is the largest reflecting refracting x-ray or the very large array?
It's difficult to understand the question, but WikiAnswers doesn't do well with multiple choice questions.
In general, refracting telescopes are smaller than reflecting telescopes; a refractor has the light going straight through the tube, and structural considerations force limits on its size. In a reflecting telescope, the light path is folded back on itself, and reflecting mirrors reflect more light than thick lenses can pass through. But the largest current reflecting telescope is perhaps 300 inches in diameter, although larger ones are planned.
By contrast, the Very Large Array of radio telescopes is ACRES in total size, and there is no theoretical limit in how large "it" could be - because "it" is actually "they". Dozens, potentially hundreds of radio telescopes can add their size together to develop a more sensitive and more precise instrument.
Can the Hubble Space Telescope detect radio waves?
I do not believe that the Hubble is equipped for radio astronomy. Certainly it can "detect" radio waves; it is remote-controlled by radio. But most radio astronomy is done with earth-based dish antennas.
I don't know, but you shouldn't be looking at naked women.
No, it is just an ordinary noun. A proper noun is a name, and it needs a caaptial letter.
What is the Hubble space shuttle?
The Hubble Space Telescope (HST) is a space telescope that was carried into orbit by the Space Shuttle Discovery in April 1990. It is named for the American astronomer Edwin Hubble. Although not the first space telescope, the 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 is a collaboration between NASA and the European Space Agency, and 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. The 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, severely compromising the telescope's capabilities. However, after a servicing mission in 1993, the telescope was restored to its intended quality. Hubble's position outside the 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 of the universe's most distant objects ever made. Many Hubble observations have led to breakthroughs in astrophysics, such as accurately determining the rate of expansion of the universe. The Hubble is the only telescope ever designed to be serviced in space by astronauts. To date, there have been four servicing missions. Servicing Mission 1 took place in December 1993 when Hubble's imaging flaw was corrected. Servicing missions 2, 3A, and 3B repaired various sub-systems and replaced many of the observing instruments with more modern and capable versions. However, following the 2003 Columbia Space Shuttle disaster, the fifth servicing mission was canceled on safety grounds. After spirited public discussion, NASA reconsidered this decision, and administrator Mike Griffin gave the green light for one final Hubble servicing mission. This was planned for October 2008, but in September 2008, another key component failed. The servicing mission has been postponed until May 2009 to allow this unit to be replaced as well. The planned repairs to the Hubble should allow the telescope to function until at least 2013, when its successor, the James Webb Space Telescope (JWST), is due to be launched. The JWST will be far superior to Hubble for many astronomical research programs, but will only observe in infrared, so it would complement (not replace) Hubble's ability to observe in the visible and ultraviolet parts of the spectrum.
How do you columnate a schmidt-cassegrainian telescope?
There are usually 3 adjusting screws on the front of the telescope over the secondary mirror. You point the telescope at a bright star and then defocus it this forms a donut-like image in the telescope. If you center the "doughnut" in the middle of the telescope view you will see that the "doughnut" has the dark area in the middle off center (If the scope is not colminated properly). What you want to do is move the doughnut to the edge of the telescope in the direction where the dark center is "out of center". Now you will tighten one of the three screws in the front. The way to figure out which screw to adjust is by placing your finger in front of the scope where the doughnut is out of center. You will see a dark line in the doughnut image where your finger is and it will actually be pointing to one of the three screws in front - that screw needs to be tightened. You repeat these steps until when you put the dougnut in the center view of the telescope and see a perfect looking "doughnut" with the dark part centered perfectly.
What wavelength does the Lovell Telescope use?
The Lovell Telescope is a radio telescope at Jodrell bank (Cheshire U.K). It can observe wavelengths up to ~5 Ghz.
Interferometry uses two or more telescopes to achieve?
a light-collecting area equivalent to that of a much larger telescope.an angular resolution equivalent to that of a much larger telescope.both the light-collecting area and angular resolution of a much larger telescope.Correct
answer: an anguar resolution equivalent to that of a much larger telescope. ;-)
What is the shape and structure of a meteor in space?
Technically, a "meteor" is the streak of light caused by a space rock fallingthroughthe atmosphere and being heated to incandescence by friction and compression. So there are no meteors in space.
You're probably wondering about a "meteoroid", which is a space rock drifting through space, which would become a meteor if it ever hits the atmosphere. We don't know, because we've never had a chance to examine one close-up in space. But we expect that they would all be different, depending on how and where they were formed - or were blasted apart by the collision of other larger space rocks.
Why do radio telescopes work better down in the valleys?
Radio telescopes tucked into valleys can "hide" in there from interference that may be radiated into the side of the antenna array from earth sources. Better shielding equals less noise (interference) and greater resolution of a desired signal. Remember that radio telescopes are highly directional, and they don't "see" signals to the sides well. Now consider the "closeness" of a source on earth compared to any space object that is an image objective. There is no comparison. Any source of interference on earth will be a zillion times "closer" and the signal will be a zillion times "larger" than a space objective, even though the noise is "coming in from the side" to hit the dish. Bad news for the radio astronomer. Hide the dish, slash interference radiated into the sides of your dish and get good (better) results. Piece of cake.
What kind of shape is the primary mirror of a reflecting telescope?
The name of this type of instrument is derived from the fact that the primary mirror reflects the light back to a focus instead of refracting it. The primary mirror usually has a concave spherical or parabolic shape, and, as it reflects the light, it inverts the image at the focal plane.
Nobody "discovered" earth, in the sense that European Explorers were said to have "discovered" The Americas and Australasia.
Planet Earth formed over 4 billion years ago and life first formed about 1 billion years later.
The first Human life as we understand it today originated about 200,000 years ago so it could be said that those early humans "discovered" the planet. Regrettably, there is no record of any of their names.
Every being discovers Earth in a manner unique to them. In particular, the Earth known to the Birds differs from that known to the Fish, and different again from that known to most Land Animals.
What are the importance of planetariums?
plan·e·tar·i·um /ˌplaniˈte(ə)rēəm/
Noun:
1: A domed building in which images of stars, planets, and constellations are projected for public entertainment or education.
2: A device used to project such images.
This is the definition of "planetarium". The reason why they are important is because they are used to teach the public about astronomy. Planetariums are also used for entertainment purposes.
Who invented the radio telescope?
Radio Telescopes were officially discovered and invented by Karl G. Jansky in 1931. His radio telescope was a series of arms that spun around with the intention of detecting radio frequency interference during a thunder storm. However, as time progressed he realized that his "radio telescope" was detecting static which he could not account for. He also discovered that each day the static peaked four minutes earlier, ruling out his original explanation as the source being the sun. Astronomers refer to a stellar day (which is typically four minutes shorter than a solar day) as a sidereal day. Not being an astronomer himself, it took Jansky a while to surmise that the source of his static was in fact of Extraterrestrial origin. With further study he discovered the source to be the milky way galaxy and in 1933 published his findings in a scientific journal. However his research was largely ignored by the scientific community until in 1937 when Grobe Reber picked up where Jansky left off and built the prototype of what we now know to be a radio telescope in his back yard in Wheaton, Illinois. At first he began looking for radio waves at shorter wavelengths, with little to no success. He later increased his target wavelengths to 1.87 meters where he located strong radio emissions along the Milky Way. Reber continued his research up until 1944, when he published his own scientific findings. Despite this, it wasn't until after World War 2 that Radio Waves were explored in depth, since the Allies had discovered radio interference from the sun on their radars.
Is the image produced by a radio telescope the same as the image produced by a optical telescope?
no you cant see image its appers in waves
What are the advantages and disadvantages of a ground based radio telescope?
An "optical" telescope would naturally collect light from optical wavelengths, meaning visible light from ~400-800nm.
What kind of telescope focuses light through a transparent lens?
An optical telescope (as distinct from, say, a radio telescope). It's possible that the answer was intended to be "a refracting telescope" but reflecting telescopes use lenses as well.
How did the telescope change life in America?
For most people, it has not changed them at all. Most people care only a little about distant stars and galaxies, and so far none of those discoveries have translated into products or technologies that truly impact our lives.
But the photography and the artwork has been mind-blowing, and for those who are interested, the Hubble has given us a lot of new pictures to admire.
But "change lives"? Not so much.
