0
A lens has to be polished on both sides. Also, a mirror can be supported from the bottom, along all of its surface; a lens that is too large will sag. Finally, a lens absorbs part of the light that passes through it. The largest telescope lens has a diameter of about 1.2 meters; it seems unlikely that any larger telescopes using lenses will be built.
A lens has to be polished on both sides. Also, a mirror can be supported from the bottom, along all of its surface; a lens that is too large will sag. Finally, a lens absorbs part of the light that passes through it. The largest telescope lens has a diameter of about 1.2 meters; it seems unlikely that any larger telescopes using lenses will be built.
A lens has to be polished on both sides. Also, a mirror can be supported from the bottom, along all of its surface; a lens that is too large will sag. Finally, a lens absorbs part of the light that passes through it. The largest telescope lens has a diameter of about 1.2 meters; it seems unlikely that any larger telescopes using lenses will be built.
A lens has to be polished on both sides. Also, a mirror can be supported from the bottom, along all of its surface; a lens that is too large will sag. Finally, a lens absorbs part of the light that passes through it. The largest telescope lens has a diameter of about 1.2 meters; it seems unlikely that any larger telescopes using lenses will be built.
What else can I help you with?
Is refracting telescopes bigger then reflecting telescopes?
Not necessarily. Refracting telescopes can be large, but reflecting telescopes can also be quite large and often have larger apertures due to their design. The size of a telescope depends on its purpose and design specifications rather than whether it is refracting or reflecting.
What are some of the advantages of reflecting telescopes over refracting telescopes?
Size... a reflecting telescope with the same power as a refracting telescope is much shorter. This is because, in the reflecting telescope, the incoming light is bounced off mirrors (often more than once) which means the physical length is much shorter than an equivalent refracting model.
Which of the following statements best describes the difference between a refracting telescope and a reflecting telescope?
A refracting telescope uses lenses to gather and focus light, while a reflecting telescope uses mirrors. Reflecting telescopes are often preferred for large astronomical telescopes because mirrors can be made larger and more easily than lenses.
Why are reflecting telescopes considered better than refracting telescopes?
Reflecting telescopes are considered better than refracting telescopes because they use mirrors to gather and focus light, which reduces chromatic aberration and allows for larger apertures, resulting in clearer and sharper images.
What type of telescope is placed in observatories?
Many types. The Lick Observatory on Mount Hamilton, above San Jose, CA, has a large refracting telescope. Small college onservatories often contain Dobsonian Reflecting Telescopes, and the bigger observatories generally have several of different types. The biggest ones are all reflecting telescopes.
What are two different types of telescopes?
Refractors and reflectors. One should add the largely Russian-developed Cassegrainean combines features of both systems-called also Maksutov after its Russian inventor who was awarded the Staliln Prize for this feat. They are adapted to (Mirror=Lens) telephoto camera lenses, also.
Does a telescope use a convex lens?
Yes, a telescope typically uses convex lenses to gather and focus light. The objective lens, which is usually convex, collects and refracts light to create an image that can be magnified by the eyepiece lens.
What advantages do reflecting telescopes have over refracting telescopes?
refracting telescopes use lenses instead of mirrors. 1. chromatic aberration: when light passes through a lens it is focused at different points. Blue focuses closer to lens and red farther creating a smeared image. 2. Some light is absorbed by lenses. 3. Lenses are heavy and can only be supported by the edge. 4. Lenses must have to optically acceptable surfaces whereas a mirror only needs one.
What are the advantages and disadvantages of using different telescopes for astronomical observations?
Advantages of using different telescopes for astronomical observations include the ability to observe different wavelengths of light, which can provide more information about celestial objects. Additionally, different telescopes have varying levels of resolution and sensitivity, allowing for more detailed and accurate observations. Disadvantages include the cost and maintenance of multiple telescopes, as well as the need for specialized knowledge to operate each type effectively. Additionally, using different telescopes can lead to inconsistencies in data collection and analysis.
Used to see stars and planets?
A telescope is used to see stars and planets by collecting and magnifying light from distant objects in the night sky. Telescopes come in different types such as refracting, reflecting, and compound telescopes, each with its own advantages for observing celestial bodies. Professional astronomers and amateur stargazers alike use telescopes to explore the universe and observe objects like galaxies, nebulae, and planets in detail.
What type of telescope is most often used to view distant objects?
Reflecting telescopes are far-and-away the most common. This is because the telescope can be smaller and lighter, and because lenses always absorb a little light while mirrors can be almost perfect reflectors.
What are the largest reflecting telescopes?
Radio telescopes. I believe the largest INDIVIDUAL radio telescope has a diameter of about 300 meters. Moreover, several of those are often connected to work in unison.
