Telescopes are an arrangement of lenses or mirrors or both that gathers visible light, permitted direct observation or photographic recording of distant objects. A telescope can be used in many ways such as viewing stars, moons, planets, looking at the city from a tall building, or looking at wildlife. All telescopes are not the same, some are better than others. There are three different kind of telescopes. Reflecting which uses two mirrors instead of lenses, Catadioptric (CAT) which combines lens with two mirrors, and Reflectors. In this paper, I will be talking about a refractor telescope and explaining the terms of different terms that describe a telescope in addition special characteristics that makes a telescope a good choice for what you need it for.
Refractors is a type of optical telescope that uses a lens as its objective top form an image. A refractor telescope is made with glass optical elements, like a camera lens. It had a long tube with glass lenses in the front end. They are essentially similar to a big camera lens, but use fewer lens elements. Refractors are high quality and known for their high contrast, excellent imaging ability and relative durability. The may produce views of bright, highly detailed objects (the moon and planets) that are noticeably better than corresponding mirror telescopes. The main advantages of a refractor are that it is easy to uphold, easy to use, and is capable of global observing as well as stargazing. One problem with refracting telescopes is that there is a frequency requirement for refraction, so the amount of refraction at each surface of the lens depends on the wave length. So, different wavelengths focus at slightly different points. It causes objects like stars to be surround...
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...ope, and use the telescope simulator. We have learn there are many different kind of telescope like Refractors, Reflectors, and Catadioptic. Also that there are many different terms that describes a telescope. Using the Simulator, we had to determine which inch of the Aperture, which milometer of the Eyepiece, and the focus Adjustments to get a better picture of the moon/Saturn/cluster. After we get the best picture, at the bottom left hand corner. It show the Light Gathering Power (LGP), Resolution, Magnification, and the field of view. Light Gathering Power is the most important feature. It’s referred to as aperture gain is the ability of a telescope to collect a lot more light that the human eye.
Works Cited
http://www.chuckhawks.com/astronomy_definitions.htm http://www.chuckhawks.com/telescope_basics.htm http://starizona.com/acb/basics/equip_whichisbest.aspx
On Saturday April 9th, Alex and I took a trip to LA and visited the Griffith Observatory. Alex who is also in astronomy thought it would be a good idea to do the horizon project together and go to the Griffith Observatory and see one of the shows at the Samuel Oschin Planetarium called Centered of the Universe.
2, Alter Dinsmore, Cleminshaw H. Clarence, Philips G John. Pictorial Astronomy. United States: Sidney Feinberg, 1963.
In 1610 he was one of the first people to use the telescope to observe
Sixty-Five million years ago, 70 percent of life on Earth died. The most reasonable and possible reason this happened was an asteroid. An asteroid hit the Earth very hard, and in doing this, dirt and dust from the impact stayed in the air and it blocked out sunlight, that’s why the dinosaurs died. An asteroid is a rock from outer space. Asteroids have orbited the Sun along with the planets since the solar system formed about 4.6 billion years ago, but it’s only been 200 years since we first discovered them. Meteorites are small pieces of asteroids broken off on impact with other asteroids. Most meteorites are rusty brown on the outside, have rounded edges from melting as they go through Earth’s atmosphere, and contain iron. There are 3 different types of meteorites: stony, metallic, and stony metallic.92 percents of all asteroids are stone, 6 percent are made of iron and nickel, and the rest are a combination. Some meteorites also contain gold, copper, platinum, and carbon.
The principle behind the refractive telescopes is the use of two glass lenses (objective lens and eyepiece lens) to gather and bend parallel light rays in a certain way so that the image fits the size of the eye's pupil. Light rays is gather through the opening of the telescope called the aperture and passes through the objective lens and refracts onto a single point called the focal point. From there the light rays continue the same direction until it hits the eyepiece lens which also refract the light back into parallel rays. During the process, the image that enters our eyes is actually reverse of the original image and magnified because the size in which we preceive the image.
The Hubble Telescope is the world’s first space-based optical telescope. The Hubble telescope received its name from American astronomer Dr. Edwin P. Hubble. Dr. Hubble confirmed an ever expanding universe which provided the basic foundation of the Big Bang theory. The first concept of the Hubble telescope came from Lyman Spitzer in 1946 who at that time was a professor and researcher at Yale University, Professor Spitzer believed that Earth’s atmosphere blurs and distorts light and a space orbited telescope would be able to surpass this problem. He spent nearly all of his life dedicated to making this concept into a reality. (http://hubblesite.org/the_telescope/hubble_essentials/)
never heard of? Thanks to space probes these dreams may become a reality sooner than u think. In the past years there have been many space probes launched and even more discoveries made by them. These probes are helping people to better understand our solar system and everything it. They are also helping to make many new discoveries.
People have been venturing out into the universe for many years now. In addition to satellites, both women and men astronauts have traveled into space to collect data about the universe. The first human being, the first animal, and the first spacecraft in orbit, were all achievements of the Soviet Union.
The refracting telescope is one of many different types of telescope. Refracting telescopes work by refracting the light through an initial convex lens, (known as the objective lens), then through another convex lens (known as the eyepiece lens). These two lenses focus the light into the eyepiece so we can see the image clearly.
have the capability to let you talk with someone across the nation or let you
One thing us as humans have never been able to fully understand is astronomy. Always having an unexplained mystery, astronomy also has served as a way to keep time and predict the future. The word “astronomy” is defined as the study of heavenly bodies, meaning anything in the sky such as stars, galaxies, comets, planets, nebulae, and so on. Many people, if not everyone, is amazed by the night sky on a clear, moonless night.
The microscope which is invented and developed by much different scientist overtime is one of the most important tools a scientist especially in the biology and chemistry study can use. It made an impact in how we view life and learn more about the nature of diseases that had plague mankind for years. The microscope is mainly a tool biologist use but it has many uses for those studying chemistry.
Isaac Newton created the first 'practical' reflector in 1668, which included a small flat diagonal mirror to reflect the light to an eyepiece mounted on the side of the telescope. With time, telescopes became bigger and more sophisticated, and astronomers discovered more stars and galaxies. They were also able to calculate the distance between stars. Most of the large optical telescopes used for research today are reflectors.
A satellite is defined as an object that orbits or revolves around another object. In basic terms, this relationship is due to the gravitational pull of the larger object while the smaller one has enough velocity and momentum to circle the larger one (Fitzgerald &Dennis). This is a good definition if one is only speaking of the broad principles of why and how objects attract one another and where in nature this occurs. The billions of stars and planets together make up a vast network of orbiting objects that each can rightfully be called satellites. By studying the way the Universe and Solar System works, scientists have been able to send man made devices into earth's orbit to serve the needs of a technologically developing world.