Optical Telescopes On The Ground

Another great advantage of the Hubble telescope, is that it allows Astronomers to have observations without the interference of cloud cover and illuminating glow of the atmosphere that is caused by the light from the sun. The reason why Hubble allows Astronomers to have such great observations without the above interferences, is because Hubble is in space and is orbiting the Earth. Also, being that Hubble orbits the Earth and is above the atmosphere, this allows Hubble and it's Astronomers to have a wide range view of the electromagnetic spectrum. One of the greatest things about Hubble is that it allows observations to be consistent and it's optical stability allows Astronomers to detect small changes in what they are

The telescope is an optical instrument designed to make distant objects appear nearer. It contains an arrangement of lenses or mirrors or both that gathers visible light, permitting direct observation or photographic recording of distant objects. (Lacki, B. C. 2011). With the use of telescopes we have been able to learn a lot more about the planets in our universe. It has helped us understand about some of the history of everything around us. Also it has been able to track asteroids and comets or any randomly flying objet in outer space that might become threatening to our planet.

Actually observing the sky through the campus Steward Observatory telescope brought perspective to just how lucky we are in Tucson to have such amazing resources to study the sky. The location of the telescope is amazing; right in the middle of our historic campus which allows the general public accessibility to something that might otherwise be reserved for astronomers or scientists. Having a 21” telescope to view the night sky expands the field of view that wouldn’t be as wide-ranging with an ordinary telescope. Having looked through telescopes that were probably 4.5” previously, I wasn’t really sure what to expect looking through a scientific version. Clear weather in late November and having a night sky ordinance in Tucson also allows optimum viewing opportunities year round. “Thanks to a local ordinance that strictly limits artificial-light pollution, Tucson supposedly has the darkest night skies of any city its size in the country.” "Seeing Stars in Tucson 's Brilliant Night Sky." The Washington Post. WP Company, n.d. Web. 05 Dec. 2016. “For a city of 500,000, Tucson is an astonishingly good place for stargazing.” I was already aware that the magnification quality of the telescope influences exactly what is visible through the eyepiece. Knowing a telescope’s optical system captures an image like a camera lens. I realized my eyes had to adjust to the dark. At first I had a difficult time seeing things until I

Meridian has been manufacturing fine telescopes for 80 years and has developed a well-earned reputation for quality craftsmanship. The company itself produces and sells two distinct lines of telescopes, which are produced in its 200,000 square feet facility. Furthermore, both lines have been developed to appeal to distinct target audiences who have an interest in the company’s products. The older line, for which there has been steady demand, consists of small professional telescopes that ultimately have laid the foundation for Meridian’s strong reputation. Following the success of

Another way Americans utilize satellites is for meteorology. The satellites monitor major storms and help meteorologists more accurately predict the weather. Satellites are able to capture photographs of the Earth and other planets. This ability allows scientists and researchers to constantly obtain more information about space and the

Some limitations are that parallax angles of less than 0.001 arcsec are very difficult to measure from Earth because of the effects on the Earth’s atmosphere. This limits Earth based telescopes to measuring the distances to stars about 10.01 or 100 parsecs away. Spaced based telescopes can get accuracy to 0.001, which has increased the number of stars whose distance could be measured with this method. However, most stars even in our own galaxy are much further away than 1000 parsecs, since the Milky Way is about 30,000 parsecs across.

Astronomers study the planets, stars, and other celestial objects to try to understand how the universe works. They also study things like collisions, black holes and other things that could potentially affect earth. Astronomers gain information about objects in space from telescopes, and satellites. They can also use mathematical equations to find the positions of planets and stars in our universe. These telescopes and satellites observe light reflected by things such as planets, meteors, or stars in space and use it to make observations. Then the Astronomers job is to collect and analyze the data observed.

Generally in astronomy, light pollution and thick atmospheres distort and impair images from optics like telescopes. Light pollution crowds out the targets being observed, while the atmosphere dims the light received from them. When choosing the location for the building of a new telescope, it is highly beneficial to build in areas with a thinner atmosphere and low light pollution . This is why mountaintops are typically the preferred sites for new telescopes, and why Mauna Kea is a highly desirable location. A new telescope called the Thirty Meter Telescope (TMT) is revolutionary in

Although telescopes were a revolutionary discovery they would come at a price. As described in my second site “Ground-based telescopes cost about 10 to 20 times less than a comparable space telescope...Because of their sensitivity to environmental factors, ground-based telescopes would need to be set up in specific spots. Scientists and engineers must take different physical factors into consideration when finding a suitable location to place a ground-based telescope.” These disadvantages make it difficult to get the full experience of using the telescope correctly and using it to benefit the viewer.

A dobsonian is a telescope that uses the Newtonian style of bouncing rays of light back into the scope from the tube. The mirror's width allows for varying amounts of photons depending on the telescope. The wider the mirror the more luminous the image. Newton was able to create a reflecting telescope that was much more powerful than the small tube used by Galileo, and this resulted in a revolution in telescope construction adhered to by Orion SkyQuest today.

By looking at the different wavelengths or the spectrum of light from a celestial object, you can tell many of its properties and features. To do this, the Hubble Telescope is equipped with various scientific instruments. Each instrument used

of other planets such as Saturn or Mars are a great way of studying other planets surfaces

As proposed in an article posted on amazing space.org, “The telescope, a basic reflector with a 94.5 in (2.4 meters) mirror.” While also having being a second mirror that the light bounces to to. Within that mirror, many instruments were compacted together that allowed for clear and visible views in infrared and ultraviolet light. It was different compared to any other ground based telescope whereas it allowed astronomers to observe and witness details that had never been seen before due to Earth being in the way for those other telescopes. The telescope revolves around the earth completely every ninety-seven minutes at the speed of five miles per second, allowing for many observations in space. The observations occur when light hits the main mirror and then bounces towards the second mirror in which the second one focuses the light. The telescope began to be created in 1977 and was originally supposed to launch during the year of 1985. Unfortunately an accident had occurred when a space shuttle challenger exploded and flights into space took a halt. It was finally launched on April 4th of 1990 once the halt had stopped. The improved observations had begun and the history of astronomy had changed. Unfortunately there were some minor setbacks that had to be dealt with. One setback was that the primary mirror was ground incorrectly in which the curve of it was too flat. It was off just

Optical astronomers have the sun to deal with. Because our sun is closer to us than other stars, a greater amount of light reaches us. When the sun is out, it effectively blocks visible light waves emitted by a distant star from reaching us. At night there is no interference. Radio Astronomers have the advantage in that they are able to observe at any time of the day. Since the sun does not produce radio waves, there is no interference received by the telescope from the sun.

In 1609, Galileo Galilei, using “spyglass” which allowed one to see things closer than they appeared, made an early version of the telescope. With it, he observed the skies in a way no one had before. He discovered the moon isn’t perfectly globular, it has craters, the Sun has sunspots, Venus orbits the Sun (contrary to widespread belief in his time), and then he observed four “stars” around Jupiter (“Our Solar System”). Within