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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
On a clear night how many stars can you see without a telescope?
From : http://www.bigsiteofamazingfacts.com/how-many-stars-can-you-see-in-the-sky
"Of the billions and billions of stars in the heavens, only about 6,000 can be seen from the earth without a telescope. And about a quarter of these 6,000 stars cannot be seen from most lands north of the equator."
Other estimates range anywhere from 2000 to 10,000, depending on where you are and what reference you use.
Which part of a telescope focuses the incoming light?
The list of choices you included with your question doesn't include any part of a
telescope that can do that. I would have picked the objective, whether a lens or
a mirror.
Which planet was first seen by a telescope?
te very ever first person is einstine hoo else nooo im just pulling ur legs i so dont know hooo it is myelf and trying to find out hoo it is like so very very soz bye hope u find the answer to ur question
What invention was made after the Hubble Space Telescope?
The James Webb Space Telescope was developed after the Hubble Space Telescope. It is designed to be the successor to Hubble and will study the universe in infrared wavelengths to help answer fundamental questions about the origins of the cosmos.
Which famous scientist first used a telescope for astronomical observations?
Galileo was probably the first scientist to use a telescope.
Telescopes were invented about 1608 by spectacle makers in the Netherlands. Galileo used one for astronomy the following year.
Galileo .
What are some uses of telescopes?
You use a telescope for looking into space, and looking and stars, planets, moon etc. You could use a telescope as a big binocular. So basically a telescope is used to look at things which are really far away.
Telescopes are used for many things:
Study space
Scientific experiments
Observation
War
Hobbies
Equipment for students
they use it to observe stars and to identify new stars.
Why does a larger telescope allow astronomers to see more?
A larger telescope has a greater light-collecting area, which allows it to gather more light from faint objects in space. This increased light-gathering ability improves the telescope's sensitivity and ability to detect fainter objects, providing astronomers with clearer and more detailed images. Additionally, a larger telescope can have higher resolution, allowing for sharper and more detailed observations of celestial objects.
Why are some telescopes placed above earths atmosphere?
They're at high elevation - to escape the atmospheric disturbance caused by natural and man-made heat 'currents'. Shifting heat currents cause images collected by telescopes to distort. Placing them at higher altitudes minimises the effect, so the images are clearer. Additionally, being high up, they're away from towns and cities, which vastly reduces the amount of 'light pollution' created by man-made light sources.
Are they going to retire The Hubble Space Telescope?
Yes, the Hubble Space Telescope is expected to be retired in the mid-2020s. It has been in operation since 1990, and the James Webb Space Telescope will be its successor.
If the solar system is the size of a football field how far would the earth be from the sun?
Well, we have to make some simplifying assumptions here, because the question selected a rectangle for a scaled-down metaphor instead of a circle or disk. Also, there's some uncertainty implied when the question says " ... the solar system is the size of ... ", since wwe really don't know how far the sun's inf'luence extends, so we don't know where the questioner wants to put the outer 'edge' of the solar system.
Let's make these assumptions:
1). Pluto is the farthest planet from the sun that we know of, so we'll say that the solar system is everything inside Pluto's orbit.
2). We'll shrink everything so that Pluto's orbit exactly fits between the goal-posts ... the orbit will be 120 yards in diameter, the orbits of all the other planets fit inside that circle, and the sun is on the 50-yard line.
-- The sun itself is about 1/2 inch across ... about the size of a dime.
-- Mercury, the planet closest to the sun, is never more than 21 inches from it; it speeds around the sun once every 88 days.
-- The earth is a ball a little less than 0.005 inch across. It moves around the sun on a circle that is 9 ft 1 inchacross, taking a year to complete one revolution. The moon stays with the earth, circling it once a month, never more than 0.15 inch away from it.
-- Jupiter, the largest planet, is a ball 0.05 inch across. It circles the sun on a path that fits inside the 23-yard lines on each side, once in each 11.8 years.
What is a curved glass that makes things look closer than they really are?
- Curved glass that makes things look larger or closer is a magnifying glass.
Where is the Kepler telescope today?
Kepler never had a telescope.
All of his breakthrough accomplishments that totally revolutionized human understanding of the observable universe were accomplished with brain, pen, paper, and the notebooks of Tycho Brahe ... who likewise never had a telescope.
Why must astronomers use infrared telescopes to observe the motions of stars around Sgr A?
Studying universe in IR (infrared) wavelength is called infrared astronomy. Because of lot's of parameters such as redshift (for far objects like early galaxies) it is very interesting for modern astronomy and most of future studying in this field will be on these wavelengths.
Next generation of space telescopes (like WEBB) will observe in IR too.
Why is not good to discover space?
There's no air
Also, radiation from the Sun; vast distances; some risk of collision with debris; the massive, very sophisticated engineering needed to get up there in the first place and then to survive and to return safely.
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.
