Optics used in Astronomy Telescopes
Optics can be found in all sorts of devices including telescope mirrors, telescope optics, binoculars, telescope glasses and also binoculars optics. Below are some of their uses
1.Control of light
Optic lenses are produced to change the density and trajectory of a light beam as it passes through. They are general made out of glass or plastic but any material that can allows a certain amount of light to pass through can be used. The job of the optic is to alter the size or focus of an image or to cast the image onto a targeted area.
2.Projection
Optic lenses are also used to project an image from one area to another area in a different location. I good example is the film projector that uses the light passing through the film, through the camera lens and projects it onto the screen and which is then viewed by the audience.
3. To magnify an image
microscope optics are used for the magnification of small images impossible for the human eye to see. Photons (which are dense light particles) get spread out over a large area every time they pass through a microscope optic, after passing through numerous lenses the image becomes larger and larger until it finally gets projected onto the desired surface for the naked eye to see.
4. To Focus an image
The distance from telescope optics and the image is called the focus point. As this distance changes the optics have to be moved to compensate which
keeps the image sharp and clear.this is the process of focusing which stops the image from becoming blurry and unrecognisable
How Does an optic work in a telescope?
In a central location inside all telescopes is the source used for gathering light from an image.In the refractor telescope this is called the primary objective lens,whilst in the optical reflector telescope and the optical catadioptric telescope it’s known as the primary mirror. This central location gathers the light from the image and projects it along a focal plane to an eyepiece which can then magnify the image before presenting it to the human eye
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