Advantages And Disadvantages Of Using Refracting Telescopes

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.

FIGURE 1.7- A magnified view of a single lenslet shows a portion of an aberrated wavefront (red curve) passing through. If the wavefront had been flat (aberration-free), it would have focused to a point on the video sensor (CCD) on the lenslet's optic axis (yellow dot). Refractive errors distort the wavefront out of a plane, so a wavefront portion (red curve) enters the lenslet curved and tilted. The light will therefore be focused to another part (red dot). The dot will be shifted by an amount that is in direct proportion to the wavefront tilt.

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

6.  A common problem with refracting telescopes is a fringe of false color around the image, caused by the inability of a large lens to refract all colors of the spectrum to a common focus. This is known as ______.

A discrete focus of alternating colors with or without an associated-color comet-tail artifact (Figure 31) (Chen Q, Zagzebski J A., 2004).

High-index lenses are made from a substance that refracts more light than traditional lenses. This makes the lenses thinner and lighter.

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

where  is the speed of light (). The energy ( in joules) contained in one quantum of electromagnetic radiation is described by the equation

Light is electromagnetic radiation, energy shown as a wave or a particle, that can be visually perceived as radiant energy.1 Light is measured by the wavelength and frequency. A wavelength is the distance from any point on one wave to the same point on the next wave and shown by lambda, λ.2 The different types of light begins with gamma rays and proceed to radio waves when increasing wavelengths are compared. Frequency is the number of crests per second and is expressed in hertz and shown as v. The pattern associated with light is indirectly related to the wavelength. The variability of light starting with gamma rays and ending with radio waves is connected by decreasing frequency. Frequency is independent of the wavelength and are both

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.

It makes use of Index Matched Lenses. They are lead free and the edges are blackened. This gives you a very bright, vivid clarity, which will be noticed immediately after you hold the scope up to your eye.

intensity of light entering the cell (I0) and leaving the cell (I) are related by Beer’s Law. The

Scientists came up with a solution to correct the defect in which they came up with a replacement "contact" lens called COSTAR. The Corrective Optics Space Telescope Axial Replacement consisted of several minute mirrors that would intercept the beam of the flawed mirror and relay the corrected beam to the scientific instruments at the focus of the mirror.

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