Telescope (Telescopes)Even if a person's eyes, we could see the sky, but using the device category binoculars or a telescope will allow an eye, we can get even more exposure. Make visible the object with darker or brighter or more obvious pale. Telescope (Telescopes) is one of the categories to see aid star allows students see stars can learn the sky more than binoculars.Warning!!!Do not use binoculars or any telescope mirror or looking to the Sun directly marketed because of light of the Sun, which has a high contrast to make blind immediately.A feature of the telescopeThe variables of the telescope we should know is that ...1. the size of the camera (Aperture): the most important variables of a telescope is the size of the diameter of the camera, which means the size of the object lens (refraction of light in a telescope), or the size of the reflective mirror (reflective in the telescope), both because of the object seen rarely seen. Caused by the object fade or get light from the object, the less. Is not caused by a small object, like expanding the size of the camera so that the camera will get more light. The camera has a little camera, but don't forget that the camera is huge. Weight and moving, it may be a threat to run. 2. expanding (Power or Magnification): expanding non-variant, or very important factor. Usually, the maximum will be expanding more than 50 times (diameter of) cameras in inches (or expanding the maximum may not exceed 2 times the camera in millimeters), such as a camera, size 6 inch (6-inch) should be expanding maximum 300x (300 times), etc.There are cameras that are not extended to make shots. High contrast (so, for example, the following image. On the left side) while the camera is expanding beyond the selection (as opposed to the light received), it will make the image blur. There is no advantage (for example, the following illustration to the right), so no surprise that he might found a telescope on a huge shopping mall just 2.4 inches, but say there is growing to 475 times! " Indeed ... it is just a toy only.What kind of telescope telescope into 3 categories: 1. the light refraction telescope (Refractor Telescope) The telescope is relying on principles of refraction of light through lenses object (Objective Lens) and refraction through a lens, once again eye (Eye piece) this type of camera. Before the discovery, Galileo will be developed and used widely until. In the days of Galileo, which is perfect for exploring the surface of the Moon, planets, stars, and rings of planets, etc.The advantage of the light refraction telescope is ideal for the beginner because of the cheap (compared to the other), movement, Assembly is easy to use, and because it does not want anything too much. Makes maintenance easy. In addition, the structure of the camera, it prevents dust in the already exists. The disadvantage is that the maximum size of an object is not much. Which generally is approximately 3-5 inches, and is therefore not capable of observing objects that are also very pale, the size of a large object lens makes the image have color distortion. Due to refraction of each color. In the spectrum of light are not equal. Keep needs to be coated lenses (Coating) to fix higher prices and this type of telescope is usually come with a mirror reflection. (The Right-angle Mirror Mirror or Diagonal) to help to see the stars. Back left to Java newbies make it difficult to compare with the map of the sky. 2. reflex optical telescope (Telescope Refrector) The telescope is a living reflection of light with floor to ceiling glass, curved (Concave Mirror Objective) and refraction through a lens, once again eye (Eye piece) this type of camera, developed by I-saek Newton has a telescope is another Newton (Newtonian Telescope), which is ideal for exploring the cluster, Nebula, object, the sky or the Galaxy quite pale, etc.Curved mirror Reflective light is combined to the focal point. One point to make a picture that is sharper, so mirror reflection. There must therefore be a parabola curve (Parabola) rather than the curly part of the sphere (Sphere) (see images below consist of)The advantages of a reflex optical telescope is ideal for General because images have good quality, the price is not very high. In addition, the image is just like a real (not reverse side) In addition, the size of the camera, which is important to get light. This type of camera has a size greater than. The disadvantage is that the second reflection mirror (Mirror Mirror Reflecting or Secondary) within the camera serves the eye lens, the mirror will be reducing exposure of the camera. Cause when the size of the page the same camera. Light refraction model camera to pick up more light. Make Visual objects that have semitransparent shade (light reflex telescope. With a larger page size, camera, select instead), and the camera also requires care, especially to prevent dust or hold water because the front of the camera. Turn off direct light, nothing comes close. 3. a Catadioptric telescope (Catadioptric Telescope) A telescope that relies on both the reflection and refraction of light together for this type of camera that uses both curved mirror reflex and optical hokong lens allowance in and this type of camera has a "Catadioptric" means glass-lens (mirror-lens), for example, a camera, Schmidt-Cassegrain, Maksutov-Cassegrain, etc. This type of camera is sold for the first time in the era of 1970s (approximately 20-30 years ago only) This type of camera is ideal for exploring the cluster, Nebula, object, the sky or the Galaxy quite pale, etc. The advantages of this telescope is smaller (larger, while the camera) makes it easy to move, the size of the camera makes a short track star motor installation is simple because the weight balanced and easy-to-install device consisting of CCD camera for taking pictures, etc. The disadvantage is the price that is higher than the other cameras (in the same size) and image. Reflective yet sharp did not (the same size) because of the eye lens that serves light refraction and this type of telescope is usually come with a mirror reflection. (The Right-angle Mirror Mirror or Diagonal) to help to see the stars. Back left to Java, as well as the camera.
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