Telescopes

Reflecting telescopes are most commonly used to map the surfaces of planets and moons due to their ability to gather and focus light effectively. These telescopes use mirrors to capture light, providing clear and detailed images of celestial bodies. The larger the mirror, the more detail can be observed.

It only has to remain stable around the 3 axes through its center of mass. That's 'relatively'

easy to accomplish with gyros and heavy flywheels. Once 3-axis stability is achieved, it doesn't

matter where the whole thing goes ... it still stays pointed toward the same field of view for

long exposures. (Just remember to rig a timer to close the shutter when the earth is in that

direction from it, to avoid sunlight or artificial light from the surface being added to the exposure.)

Actually ... you know what ? That may actually be easier in space than it is on the surface

of the revolving earth. Never thought about that before!

there is a refractor and a reflector telescope. refrator is the narrow telescope that works just like a maginifying glass and the reflector telescope takes the image from the lense to the mirror in it's side and thus shows a image. both have their advantages, reflector the narrow telescope is good for viewing objects like planets and moons in the solar system, reflector the wide and short ones are good for stars, nebulas and other bodies out side of the solar system. most scientist and begineers prefer reflector though its a bit more expensive

An artificial telescope refers to a telescope that is man-made and not naturally occurring. They are designed to collect and focus light from distant objects for observation and study. Artificial telescopes can be found in various forms, including optical, radio, x-ray, and infrared telescopes.

hand telescopes

monocular

binocular

Dobsonian

rich-field telescope

opera glasses

spy glass

spotting scope

Theoretically as far as infinity, it all depends on what one wants to observe. It also depends on how much distortion there is - atmosphere etc.

However, if a mountain is 50 feet from you and it is pitch black, then you cannot see it. If it is day light, then you can see it. Yet if that same mountain is a thousand miles away you may see it as a "feature" of the horizon.

The same with the universe. Some objects are so far away that there is "nothing" to "see" even if they exist.

If there was a star with a luminosity of 500 trillion times that of our Sun located 90 billion light years from Earth then there is a good chance we could observe it. If that same Sun had a luminosity of our own Sun then there is no chance we could observe it.

"See" relies on the ability to observe, based on luminosity and distance.

The word "scope" in microscope refers to the instrument's ability to view objects that are too small to be seen with the naked eye. In this context, "scope" indicates the device's capacity to magnify and visualize tiny objects or details.

Yes, asteroids can be observed by telescopes. Astronomers use telescopes to study asteroids by tracking their movements, observing their size and shape, and even detecting their composition by analyzing the light they reflect. Telescopes on Earth and in space are used for asteroid observations.

Most telescopes are designed for observing distant celestial objects such as stars, planets, galaxies, and nebulae. They are used for tasks like astronomical research, astrophotography, and amateur stargazing.

Mars is made predominantly of rock, mineral, and metallic compounds, much like Earth. While it is cold, it is not "frozen" in the sense that it is made from something that would otherwise be a liquid. It is not an ice planet, for example.

The light from our own sun takes roughly 8 minutes to travel the distance to us. That means when you look up at the sun (don't do that without special glasses) you are looking at the sun as it was 8 minutes earlier. Or you can say you are seeing the sun 8 minutes back in time. The stars which are far away galaxies, the light takes years to reach us. So the light we see at night now can be 100 years old. Or we are seeing that galaxy as it was 100s of years ago.

Radio telescopes extend the sense of sight by detecting and measuring radio waves emitted by celestial objects in space. This allows astronomers to observe objects and phenomena that are not visible with optical telescopes.

"I logged onto WikiAnswers, went directly to the Astronomy category, and immediately

chanced upon a new question that challenged: 'Use refracting telescope in a sentence' . "

The reflective telescope was invented by Isaac Newton in 1668. He designed a reflecting telescope with a curved mirror that resolved some of the issues associated with the refracting telescopes of the time.

The Hubble Space Telescope has seen Earth. While its primary function is to observe celestial objects in deep space, the telescope has also been pointed towards Earth for calibration and testing purposes.

The mirror in a telescope is a concave mirror. That shape redirects all the light coming from a distant object that hits the mirror into a focusing lens. The mirror may be as small as several inches or many feet in diameter and it concentrates the light so it can be focused by a small eyepiece that may be only a fraction of an inch in diameter. The mirror serves the same purpose as a large lens in a refractive telescope. It takes a large cross section of light and focuses it into the eyepiece of the telescope but it does it by reflection rather than refraction. The reflective mirror is preferred over a lens for several reasons. The light reflected by a good quality silvered mirror loses very little of its intensity. Light passing through a lens loses intensity each time it passes through a glass surface and it must pass through 2 surfaces of a lens. The mirror bends the light one time and a lens bends it twice. The more times you bend light, the more chance you have to introduce distortion because of imperfections of the surface. If the glass of a lens is not ultra pure and without imperfection, the light is further distorted. The quality of glass in a mirror does not affect the light because the light does not pass through the mirror because the light is reflected off the first surface. When very large telescopes are involved, a refraction lens would weigh many times what the reflective mirror weighs.

"Magnitude" is not a term that's usually used to describe a telescope, although

it's commonly used to describe the objects the telescope observes.

Down below this answer, we've added three links that will take you to sites that are

packed full of information on the Hubble Space Telescope. If the test is tomorrow,

then you probably ought to get cracking.

Both types of telescope collect and focus electromagnetic radiation for observational purposes, the difference is their band of observed frequencies. Radio telescopes are used for the radio frequencies ( ~3km - ~30cm) while optical telescopes are used for frequencies closer to visible light ( ~0.7μm - ~0.4μm). Optical telescopes may also be able to detect infrared and ultraviolet light.

With a telescope, you can observe celestial objects such as planets, stars, galaxies, and nebulae. Telescopes allow you to see these objects in greater detail and can also be used for stargazing, astrophotography, and scientific research.

If you had a telescope on a planet 3000 light years away and zoomed in on Earth, you would see the Earth as it was 3000 years ago. Due to the time it takes for light to travel, you would not be seeing Earth in real-time, but rather how it appeared 3000 years in the past.

You can't do much better than nineplanets.org - See related link

To calculate the magnification power with a 30 mm eyepiece, you need to divide the focal length of the telescope by the focal length of the eyepiece. For example, if the telescope has a focal length of 600 mm and you use a 30 mm eyepiece, the magnification would be 20x (600 mm / 30 mm = 20x).

No. Well, if you try to walk on one, you'll fall through, and that would hurt......

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Another contributor added:

Not unless one falls on you.

Radio telescopes don't transmit anything. They are super-sensitive receivers, designed to

pick up the faint whispers of radio signals coming to earth from elsewhere in the universe.

Your cellphone exposes you to more radiation than the largest radio telescope in the world does.

The biggest telescopes are reflecting - instead of a main lens, they have a main mirror. Above a certain size, it is no longer feasible, or at least practical, to use lenses.

The biggest telescopes are reflecting - instead of a main lens, they have a main mirror. Above a certain size, it is no longer feasible, or at least practical, to use lenses.

The biggest telescopes are reflecting - instead of a main lens, they have a main mirror. Above a certain size, it is no longer feasible, or at least practical, to use lenses.

The biggest telescopes are reflecting - instead of a main lens, they have a main mirror. Above a certain size, it is no longer feasible, or at least practical, to use lenses.