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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
Why do telescopes for astronomy not have prisms?
Some telescopes do. These are usually at the eyepiece end of a refractor telescope (i.e. one with the lens at the top and you look through the bottom end. The prism bends the light at right angles so you don't get a stiff neck. The prism makes viewing more comfortable. I use one on my telescope.
Was Galileo's telescope a reflector.?
No: Galileo's telescope was a Galilean refractor, which is to say it has a single large object lens at the top end and a concave eye lens at the other end. This is not a popular type of telescope now because it has a small field of view, and it is only used for cheap telescopes and opera glasses.
When were telescopes used to see Uranus Neptune and Pluto?
All of those objects were discovered by telescope, so it's safe to say that telescopes were used from day one for each.
What is a motor drive telescope?
It is a telescope on an equatorial drive (one axis parallel to the Earth's axis). An electric motor drives the other axis at 15 degrees per hour to follow an object as it moves across the sky.
How is spherical aberration eliminated in a reflecting telescope?
A reflecting telescope should have a parabolic mirror in which case there is no spherical aberration. The process of turning a spherical mirror surface into a parabolic one is called 'figuring'.
Can a doctor use a telescope to study a patients blood?
No, that is for studying the stars, a doctor would use amicroscope.
If we didn't have them we could not see as far and we would be quite far behind on our discoveries in astronomy.
Why are telescopes observations better on the moon than on earth?
Observations from Earth-based telescopes are obscured by the atmosphere.
What is a 2 meter telescope's collecting area?
The area of any circle is (pi) x (radius)2 .
A 2-meter telescope has a radius of 1 meter. So its area is
(pi) x (1)2 = 3.1416 square meters = about 33.8 square feet.
What is the successor of hubble space telescope called?
I don't know that each space telescope is explicitly designated as the successor
to an earlier one, but ...
-- The 'Kepler' was launched recently with the primary mission of searching for
extra-solar planets, and has already delivered evidence of hundreds of them.
-- The 'James Webb' is in the final stages of assembly and test before launch.
What makes the spitzer different from other telescopes?
The Spitzer Space Telescope is designed to primarily observe infrared radiation, which allows it to study cool or dusty objects in space that are otherwise difficult to see with visible light telescopes. Its location in space, trailing Earth around the Sun, also enables it to maintain a consistently cold temperature for its instruments, crucial for infrared observations.
Is the moon or the Hubble space telescope closest to earth?
The Hubble Space Telescope, along with most man-made satellites, is in a low earth orbit. It remains 559 km from the earth. This is much closer than the moon, which orbits at an average distance of 384,392 km. It would be very difficult to have a man made satellite orbit further away from the earth than the moon without the moon interfering in its orbit.
What are the advantages and disadvantages of ground based telescope?
a normal telescope can be projected further then a space telescope because it is bigger and more of it a space telescope in in space which lets it see further into space and is more exspensive to make ect
Are there any disadvantages of using telescopes in space?
First, they have a major advantage, and that is that they have a much clearer image, due to the lack of atmosphere.
The disadvantages are mainly related to the high cost of putting the telescope up into space, and maintaining it (you can't just walk over to repair something). For this reason, other alternatives are also used, or considered, such as telescopes on Earth that compensate the atmosphere with a larger size, or advanced adaptive optics, or even telescopes carried on airplanes at a high altitude!
What is the purpose of the newtonian reflecting telescope?
Gathering and focusing light from distant objects.
What parts of the em spectrum can the arecibo telescope detect?
The Arecibo telescope can detect radio waves in the electromagnetic spectrum. It operates at radio frequencies between 300 MHz to 10 GHz, allowing it to study objects such as pulsars, galaxies, and the Earth's atmosphere.
Can the Hubble Telescope be seen through amateur telescopes?
Yes, if you know just where to look. You can see it with the naked eye. Go to spaceweather.com and click the "Satellite Flybys" link. Enter your ZIP code (in the USA) or enter your location to see a list of the visible objects.
Low-altitude satellites are visible only when the Sun has set at your location, but the satellite is still in the light; that is, shortly after sunset or before sunrise.
aliens are still uncorfirmed to date but however in 1961 astronmer frank drake invented a formulae to calculate how many communicative civilzations are in the milky way his formulae follows:
N=R* Fp ne Fl Fi Fc L
N= 10x0.5x2x1x1x0.5x10000
N= 10000 communicative civilzations
This is what drake came out in 1961. sadly, the formulae was done again and from 10000 to 2.31 so is there 10000 2 or 3 civilaztions in the milkway or are we the only ones
Where can you find a gadget to fix the telescope?
You have to use the wrench in your old spy phone to get a tool click on the red blinking light.
What makes The Hubble Space Telescope different from other telescopes?
The main difference between Hubble Space Telescopes and other telescopes is the fact that the Hubble is placed in outer space where it can observe without the distortion of the Earth's atmosphere.
Who was the hubble space telescope launched by?
The Hubble Space Telescope was launched into orbit by NASA's space shuttle Discovery on STS-31 on April 24, 1990.
The Hubble Space Telescope was named after Edwin Hubble, an American astronomer that discovered that galaxies outside of the Local Group are moving away from us at speeds proportional to their distances.
