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What is the main optical element of a refracting telescope?
lens
What telescope collects light with a mirror?
The type of telescope is called a reflector. There are multiple subtypes of reflectors like a dobsonian, newtonian, RC, etc. Check out my youtube video on how to work with pictures taken from a telescope. youtu.be/M7-vLeVhM9g
What telescope design has a hole in the center of the main mirror?
That's the "Cassegrain". The prime focus and eyepiece are out the back, even though it's a reflector.
What type telescopes use mirrors to bring light to focus.?
Reflectors - the main two types being Newtonian and Cassegrainian.
In what ways are radio telescopes better than optical telescopes?
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.
What is the main optical element of a refracting telescope?
lens
What telescope collects light with a mirror?
The type of telescope is called a reflector. There are multiple subtypes of reflectors like a dobsonian, newtonian, RC, etc. Check out my youtube video on how to work with pictures taken from a telescope. youtu.be/M7-vLeVhM9g
What is catadioptric telescope?
Basically, the catadioptric telescope is just one of the 3 main types of the optical telescopes.The other 2 main types of optical telescopes are the refracting telescopes and the reflecting telescopes.
What is a reflector that uses a secondary mirror to reflect light to the side of the telescope called?
The small mirror is a plane one reflecting a bundle of rays to the side of the main tube. That is a Newtonian reflector.
Are there any problems in using a Reflector Telescope?
Generally instead of looking along the axis of the telescope as is done with a refractor sighting the object to view is more difficult since you view the eyepiece at right angles to the main axis of the reflector. The main way to overcome this is to make a hole in the centre of the mirror as is done in the Hubble telescope and view the image from behind the mirror. This is called a Cassegrain configuration.
What telescope design has a hole in the center of the main mirror?
That's the "Cassegrain". The prime focus and eyepiece are out the back, even though it's a reflector.
What are some telescopes names?
The two types are refractor and reflector. In a refracting telescope, the light comes in THROUGH a magnifying LENS where it is REFRACTED (bent) to focus the light into an objective lens. In a reflecting telescope, the light BOUNCES OFF a curved magnifying MIRROR , and then reflected again on a secondary mirror to direct the light into an objective lens. Among the advantages of a reflecting telescope are that in a refracting lens, the thickness of the lens can absorb some of the light, while a mirror reflects all of the light. Additionally, a reflecting telescope can "fold" the telescope into a much more compact instrument, which is essential with especially large devices. A large refracting telescope would be enormously heavy and cumbersome.
What type telescopes use mirrors to bring light to focus.?
Reflectors - the main two types being Newtonian and Cassegrainian.
How far above the reflector must the radio-detecting equipment be placed in order to obtain clear radio images?
The reflector of any 'dish' antenna ... whether a radio-telescope, a satellite TV antenna on the garage, a 'Big Ear' sound recording dish, or the main mirror of a reflecting optical telescope ... is a parabolic shape. The principle of the parabola is that anything entering it parallel to its axis gets focused to the same single point, called the "focus" of the parabola, and that's where the receiver, the microphone, or the eyepiece belongs. The exact location of the focus depends on the curvature of the individual reflector, so there's no one optimum location that applies to all of them.
What is the single most important component of a telecope?
It is the main light-gathering component, the main mirror of a reflector or the object-lens for a refractor. That determines the power of the telescope to gather light from dim objects and provide a clear image.
Where are telescopes found?
Optical telescopes are found through out the world. They have even been taken to space as in the Hubble Telescope. The Optical telescope is the main telescope used by amateur astronomers. They are used in Gardens through out the world. Professional optical telescopes are generally placed on the very top of mountings. This is to reduce the amount of distortion caused by the atmosphere. The Keck observatory for example is at an altitude of 4.2 km atop the summit of Mauna Kea on Hawaii.
In what ways are radio telescopes better than optical telescopes?
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.
