Which of the following is not an advantage that a reflector telescope has over a
Reflecting telescopes have many advantages over refracting telescopes. Mirrors don't cause chromatic aberration and they are easier and cheaper to build large. The are also easier to mount because the back of the mirror can be used to attach to the mount. Reflecting telescopes have a few disadvantages as well.
Astronomers prefer reflecting telescopes because larger mirrors are lighter and much easier to construct than large lenses, and they also suffer from fewer optical defects. Instruments may be places inside the telescopes at the prime focus, or a secondary mirror may be used to reflect the light to an external detector.
Which of the following is not an advantage of the Hubble Space Telescope over ground-based telescopes? It is closer to the stars. Which of the following wavelength regions cannot be studied with telescopes on the ground? Telescopes operating at this wavelength must be cooled to observe faint astronomical objects.
Space telescopes have the advantage of being above the blurring effects of the Earth's atmosphere. In addition, there are many wavelengths from the electromagnetic spectrum that do not reach Earth because they are absorbed or reflected by the Earth's atmosphere.
Disadvantages. There are some limitations with the Hubble Space Telescope when imaging the Moon due to its sensitivity to light and it cannot image areas in the direction of the Sun. They are exceptionally expensive to build and position in place. Maintenance is difficult.
The Hubble telescope provides four key advantages over most other optical astronomical facilities: unprecedented angular resolution over a large field, spectral coverage from the near infrared to the far ultraviolet, an extremely dark sky, and highly stable images that enable precision photometry.
Space-based telescopes like Hubble get a much clearer view of the universe than most of their ground-based counterparts. They're also able to detect frequencies and wavelengths across the entire electromagnetic spectrum.
Which of the following is an advantage the Hubble Space Telescope has over ground-based telescopes? There is no blurring due to the atmosphere.
What are disadvantages or refracting telescopes? The image is upside down, they are made of glass, and chromatic aberration is a problem.
Advantages of reflecting telescope mirrors can be made bigger than lenses in size , there is chromatic aberration and In case parabolic mirror then no spherical aberration is found. There is no rainbow-like halo around the image . Reflecting telescopes can be made very large .
Reflectors do not suffer from chromatic aberration like refractors do. Large mirrors need only one optical surface, achromats four surfaces to grind. Large lenses deform under their own weight, but mirrors can be supported.
Refractor telescopes use specialized lenses that make them a favorite for deep space objects like galaxies and nebulae. Reflector telescopes are more popular with larger and brighter objects like the Moon and planets because they use mirrors that provide more sensitivity to all wavelengths.
Radio waves have a much longer wavelength than light waves (typically 100,000 times longer) and are therefore less susceptible to interferences caused by imperfections on the reflecting surface and therefore not constructed to the extent of smoothness required for glass mirrors.
Difference Between Reflectors and Refractors
Refractors telescopes utilize specially designed lenses to focus the light on an image. A Reflector telescope uses mirrors, which causes light to reflect at different angles within the optical tube and extends the overall light path.
In space, however, telescopes are able to geta clearer shot of everything from exploding stars to other galaxies. Another disadvantage for ground-basedtelescopes is that the Earth's atmosphere absorbs much of the infrared andultraviolet light that passes through it. Space telescopes can detect thesewaves.
The main reason we put telescopes into space is to get around the Earth's atmosphere so that we can get a clearer view of the planets, stars, and galaxies that we are studying. Our atmosphere acts like a protective blanket letting only some light through while blocking others.
Advantages of Telescopes
Elaborate view of the Galaxies, Planets, stars and other heavenly bodies is possible. Camera can be attached for taking photograph for the celestial objects. Telescope can be viewed even with the low intensity of light.
The main advantage of using the Hubble Space Telescope is the increased amount of "nighttime" viewing it affords. Radio telescopes are large in part to improve their angular resolution, which is poor because of the long wavelengths at which they are used to observe the skies.
Why are most large telescopes reflectors, not refractors? A. Reflectors do not suffer from chromatic aberration like refractors do.
Which of the following is the biggest disadvantage of putting a telescope in space? Space telescopes are much more expensive than similar ground-based telescopes.