James Webb Telescope

I found an article titled, “NASA’s James Webb Telescope: Hubble’s Cosmic Successor“. The james Webb Telescope(JWTS) is scheduled to launch in 2018, and will be able to probe the cosmos to uncover the history of the universe. From things such as the big bang threw alien planet formation, and beyond. It will focus on four main areas. First light in the universe. Second assembly of galaxies in the early universe. Third birth of stars and protoplanetary systems. And fourth, and planets including the origin of life. The JWTS will launch on a five rockets from French Guiana. Then it will take thirty days to fly millions of miles to its permanent location. It will orbit around L2, a spot in space near Earth that lies opposite from the sun. This has become a popular spot for many other space telescopes. Like the Herschel Telescope and the Planck Space observatory. The total cost of JWTS is roughly 8.8 billion dollars. And is expected to take spectacular photos of celestial objects like its predecessor, the Hubble telescope.

The ninth conceptual objective is, I can describe A.)the function of a telescope, B.) types of telescopes, and C. Why some telescopes are placed on the ground and some are in space. The function of many telescopes is very similar, it all starts with a refraction which is when light is being bent through air or water. The refraction is located in the lens which is rounded surface so it can focus light at one specific spot. With the combination of two lenses with the same focal points creates the magnification. And the aperture is another lenses that collects and concentrate light to a diameter. Along with the angle resolution which is the ability to see objects that are close together. And with the larger the aperture a telescope has the better resolution it receives. There are two types of telescopes you can physically look through, which are refractor and reflector telescopes. Refractor telescopes have good resolution, which is good for details and they have a rugged alignment, and you can transport then very easily. And reflector telescopes have inexpensive optics, large aperture, uniform treatment to colors, portable size, and is good for photos.  In class we look at a reflector telescope. And Dr. M asked what do you see when you look at the telescope? The answer is yourself because it uses mirrors to focus in the focal point in the telescope. Some other types of telescopes are radio telescopes, which use radio waves like your microwave to send electromagnetic radiation to see objects in space. Radio dish telescopes which use a focal point, that can be above or below the dish and antennas are used instead of cameras. A telescope array, which is when two or more telescopes are in the same location. Very Long baseline interferometry(VIBI) which combines radio signals from a telescope all around Earth. Some telescopes are located on Earth and some are in space. We learned in class by a lecture tutorial on pages 51 threw 53. Which has a diagram showing how far the wave length travels. With the shortest wavelength is X-ray with the longest being Visible light and radio waves. The reason astronomers put certain telescopes in certain location is because for the safety of the public. Wave lengths can travel only so far, so the wavelengths that have a shorter wavelength are put into outer space. And longer wavelengths are placed on earth because they can travel thought all the atmosphere. This is why people who work for airlines, specifically who fly are limited to how many house they are allowed in the sky.

The JWTS is the new age of telescopes. I relates to what we learned because it is a telescope that is placed in outer space, since I could not work from Earth.  This telescope will give use information on so many new things and will unfold the cosmos and go back as far to learn about the organ of life.




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