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There are several disadvantages with a refracting telescope.
1. Chromatic aberration is one, where all colours are not focused at the same point.
2. The mass of the lens, if large, could cause it to change shape as it is moved.
3. It is essentially impossible to have an optically perfect lens surface, and any minute imperfection causes 'confusion' of the light ray passing through that point.
4. Any lens surface will cause some reflection of light - light lost to the detector at the end point. You must have seen reflections of yourself, or of some landscape, from an ordinary transparent window glass. These reflections will re-reflect within a lens system, causing some optical confusion - loss of quality of the image.
Large modern reflector type telescopes avoid these problems by minimizing the number of glass surfaces between the incoming light and the recording surface. These days, the recording surface is usually a cmos, or similar, solid state detector.
What else can I help you with?
Compare reflecting and refracting telescopes?
Reflecting telescopes use mirrors to collect and focus light, while refracting telescopes use lenses. Reflecting telescopes are typically less affected by chromatic aberration, while refracting telescopes can be more prone to this issue. Reflecting telescopes are generally more cost-effective for larger apertures.
Do Professional astronomical telescopes generally have a much greater magnification than the telescopes you can buy in stores?
Yes, professional astronomical telescopes typically have greater magnification capabilities compared to telescopes sold in stores. This allows astronomers to observe celestial objects with greater detail and clarity. Professional telescopes also have larger apertures and specialized optics to gather more light and enhance image quality.
What are the advantages and disadvantages of X Ray telescopes?
Advantages of X-ray telescopes include the ability to capture high-energy emissions from objects such as black holes and neutron stars, providing valuable information about these phenomena. However, X-ray telescopes are limited by Earth's atmosphere, which absorbs X-rays, necessitating the need for them to be placed in space. Additionally, X-ray telescopes tend to have lower resolution compared to optical telescopes.
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Why are optical space telescopes able to see deeper into outer space than land based optical telescopes?
Optical space telescopes are not affected by atmospheric turbulence, which can distort images and limit the clarity of ground-based telescopes. Additionally, they can be positioned above the Earth's atmosphere, avoiding interference from light pollution and atmospheric absorption. This allows them to capture clearer and more detailed images of distant objects in space.
What are some types of telescopes?
there are two main types, all though there are five in total. the first one is called a refractor telescope, which uses a lense to bend the light into an eyepiece. these tend to fog up in winter time but give accurite pictures. a reflector telescope uses two mirors to reflect the light into the eyepiece. you can make these as big as you want and they dont fog up, but the immage can be distorted if the mirror angle is off by the slightest degree. of the two, i would say that the reflector is better than the refractor.there is a limmit to the size of the refractor.
How can they improve an optical telescopes resolution?
i dont know and ask me again
Why do you need to put some telescopes in space?
Telescopes on Earth have to look through the atmosphere (air) which distorts the image. Telescopes in space dont have to look through the atmosphere and so the image is a lot clearer.
Why do astronomers often place telescopes in dry areas?
so they dont get wet
What can you do to stay out of a problem?
dont get involved. If it is not your problem dont get into it. If it is your problem get some help if you can.
Compare reflecting and refracting telescopes?
Reflecting telescopes use mirrors to collect and focus light, while refracting telescopes use lenses. Reflecting telescopes are typically less affected by chromatic aberration, while refracting telescopes can be more prone to this issue. Reflecting telescopes are generally more cost-effective for larger apertures.
Do Professional astronomical telescopes generally have a much greater magnification than the telescopes you can buy in stores?
Yes, professional astronomical telescopes typically have greater magnification capabilities compared to telescopes sold in stores. This allows astronomers to observe celestial objects with greater detail and clarity. Professional telescopes also have larger apertures and specialized optics to gather more light and enhance image quality.
What are the advantages and disadvantages of X Ray telescopes?
Advantages of X-ray telescopes include the ability to capture high-energy emissions from objects such as black holes and neutron stars, providing valuable information about these phenomena. However, X-ray telescopes are limited by Earth's atmosphere, which absorbs X-rays, necessitating the need for them to be placed in space. Additionally, X-ray telescopes tend to have lower resolution compared to optical telescopes.
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