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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
What type of telescope is the South Pole telescope?
At the Amundsen-Scott South Pole Research Station, supported by the United States of America, you'll find the South Pole Telescope (SPT), which is a 10 meter (394 in) diameter telescope.
The telescope is an off-axis Gregorian type in an altazimuth mount -- effectively identical to an equatorial mount.
The first camera mounted in the telescope is a 960-element bolometer array of superconducting transition edge sensors. It is one of the largest arrays ever built.
The current camera also contains superconducting transition edge sensors and is more sensitive than the first camera and can measure the polarization of incoming light.
What was the first planet to be discovered with a telescope in 1781?
'Georgian star' (Georgium sidus)
Later renamed to Uranus - much to the delight of children all over the world.
What is the main advantage of the hubble space telescopes location?
Hubble being in space does not have a problem of seeing which is caused by atmospheric blurring and thus can observe light at more wavelengths. Its only limitation is by diffraction in its optics
What makes the hubble telescope different from all the land based telescope you are?
The Hubble telescope is in space so it doesn't have a problem with atmospheric distortion. Therefore The Hubble telescope get's a much clearer picture than any normal land telescope which gets a less clear a picture because of water vapour and diffraction of light.
What is the telescope that is in orbit around the earth?
The telescope in orbit around the earth as of 2010 is the Hubble Telescope.
What is long-wave electromagnetic radiations used in special telescopes?
Long-wave electromagnetic radiation used in special telescopes includes infrared radiation and submillimeter radiation. These telescopes are designed to detect and study objects that emit or reflect these longer wavelengths of light, allowing astronomers to observe phenomena such as cool stars, cosmic dust, and molecular clouds.
The One-Mile Telescope [See Link] at the Mullard Radio Astronomy Observatory was completed in 1964. It is an array of radio telescopes (2 fixed and 1 moveable, fully steerable ) designed to perform aperture synthesis interferometry. The telescope was used to produce the 5C catalogue of radio sources. Observations with larger incremental spacings were used to observe individual radio sources with unprecedented sensitivity, angular resolution, and image quality.
Where is the SOHO sun telescope located?
SOHO (Solar and Heliospheric Observatory) was launched into the Earth/Sun L1 Lagrangian point in 1995. This point balances the gravity from the Sun and Earth and allows for very little energy to remain in a stable orbit. There are 5 Lagrangian points for SOHO but L1 is the best positioned for Earth communications.
If you want to see Venus were should you point your telescope?
Sorry; you JUST missed it!
For the past few months, Venus has been the "Morning Star" rising before the Sun. But Venus is too close to the Sun to be visible now (December 27, 2009) and is about to go behind the Sun. By the middle of February, 2010, Venus will become the "Evening Star" setting just after the Sun does. By the first week in March, 2010, it should be easily visible in the west right after sunset.
But Jupiter is easily visible in the southwest right after sunset, and Mars rises about 9 PM local time. To be honest, Venus isn't much to see in a telescope; it is TOO bright, and is essentially featureless. There isn't anything there to see.
Point your telescope at Jupiter, and even with a fairly small telescope, you'll be able to see the four "Galilean moons", Ganymede, Callisto, Io and Europa. If your 'scope is a little bigger, you might be able to make out the colored bands in the clouds, and maybe even the Great Red Spot.
Why don't we use visible-wavelength telescopes to locate neutron stars?
A neutron star emits most of its energy at higher frequencies.
What is the telescope for looking at the sun called?
Usually it's simply called a "solar telescope, but there are other names such as "helioscope" (specialising in sunspot observation).
Current telescopes detect different wavelengths of "light," which, in general, is called electromagnetic radiation.
Earth's atmosphere is transparent to infrared radiation - it can easily transmit though our atmosphere. Therefore we can easily detect it from within Earth's atmosphere. However, X-Rays do not easily transmit through the Earth's atmosphere, so we must place our X-Ray detectors OUTSIDE of our atmosphere, ie. in orbit around the earth.
What type of radio sounds do radio telescopes hear?
Stars broadcast from x-rays down through infrared, and radio telescopes take advantage of this by tuning in to the emissions, dubbed "radio" to differentiate from "optical" here, not because the star is necessarily being monitored in our "radio" spectrum.
Because light takes time to travel. Light travels at approximately 300,000km/second.
The Sun is about 150 million km away from Earth. Light takes 8 minutes to reach us from the Sun.. But for a galaxy 1 million light years away, the light takes 1 million years to reach us. So when it finally gets here, it shows that galaxy as it was 1 million years ago. It could explode tonight but we wouldn't know until the light reached us in 1 million years.
What is a submarine telescope used for?
its used for looking out into the ocean/river/late/pond whatever body of water your in. but its usually used in the ocean.
Which type of telescope uses a convex lens to increase the size of the image being viewed?
refracting
Can i see Astronomers with powerful telescopes can see all the stars in the milky way?
No. Approximately 6000 stars can be seen with the naked eye, but there are many trillions of star out there that we can NOT see with the naked eye. Even the closest star after the Sun - Proxima Centauri - can't be seen without telescopes.
When is the best time to see the northern lights?
The best time to see the northern lights is usually during the winter months, from September to March, when the nights are longer and darker. Additionally, the equinoxes (around March 20 and September 23) are good times to see the auroras due to increased geomagnetic activity.
The satellite doesn't have the problem of atmospheric distortion due to refraction and turbulence that you have on earth.
Why are the twin telescopes of keck observatory so important?
Resolution.
To improve a reflecting telescope's light gathering ability (and thus enable it to detect fainter objects), make its primary mirror larger. However, to improve its resolving power (the ability to distinguish between two close light sources), make it wider, which is not necessarily the same thing. The further apart the outermost edges of its mirror(s) are, the sharper the image. This applies even if the mirrors are in separate 'scopes.
What is the name for the ability of a telescope to collect radiation from a star?
Please refer to the link below. This will take you to a web site that discusses this. Multiwavelength astronomy is dedicated to observing the various spectrums of radiation emitted. That is called its light gathering ability. The 'aperture size' determines the amount of light (radiation) a telescope gathers This site might help you obtain a more in depth answer imagine.gsfc.nasa.gov IT IS CALLED "LIGHT GRASP" in an optical telescope and "RF GAIN" in a radio-telescope.
