A mirror instead of and objective lens (:
Most optical telescopes used by professional astronomers are located on mountains or remote locations away from city lights to minimize light pollution and atmospheric disturbances. Some observatories, such as those in Chile and Hawaii, are known for having excellent observing conditions due to high altitudes and clear skies. Telescopes are also placed in space, like the Hubble Space Telescope, to avoid atmospheric interference.
There are also disadvantages of having telescopes in space 1 is that they are expensive to run and maintain each launch can cost millions of dollars and building the telescope can cost many million as well. Transmitting the information to earth can take longer then telescopes on the ground and can require more power.
Some telescopes are on the earth this is because they are easier to maintain as it does not require launches to get astronaughts up there to fix them. Also they are cheaper having to make a telescope usable in space takes time and money, it also requires a launch which is expensive as well. It is easier to view the results as you can view them directly from the telescopes, instead of them having to be sent from space down to earth using microwaves then you need an antenna and other.
to increase the resolution of the telescope system. By having multiple telescopes spread out, the system can simulate a larger telescope, which allows for more detailed observations of celestial objects. Additionally, this setup improves the sensitivity of the telescope array, enabling it to detect fainter signals.
Because it's not important. Introducing a prism into the optical path would absorb some of the light, which is important. So the tradeoff is an easy choice for astronomers to make.
Two large objective lenses.
Optical telescopes are placed high to avoid having to look through the thickest part of the atmosphere. Radio telescopes are place in valleys to avoid the effects of man-made electrical noise in the telescope.
One who, or that which, reflects., Something having a polished surface for reflecting light or heat, as a mirror, a speculum, etc., A reflecting telescope., A device for reflecting sound.
Telescopes in space are able to view objects clearly without having to look through a thick layer of the Earth's atmosphere. This enables them to capture better pictures and observe dimmer and more distant objects.
Shrimps and crabs differ from molluscs by having a chitinous exoskeleton and jointed appendages.
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All telescopes collect or focus radiation in some way, because visible light is a form of electromagnetic radiation. The advantages of telescopes include being able to see things that are far away, as well as the ability to observe heavenly bodies.
Most telescopes in the desert are quite a distance from towns and cities which means that scientists and technicians must travel to reach them or to obtain supplies.
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Lampreys differ from hagfishes by having a notochord that is surrounded by a tube of cartilage.
This is because they are easier to mantain as it does not require launches to get astronaughts up there to fix them. Also they are cheaper having to make a telescope usable in space takes time and money, it also requires a launch which is expensive as well. It is easier to view the results as you can view them directly form the telescopes, instead of them having to be sent from space down to earth using microwaves then you need an antana and other equipment to view it.
Most optical telescopes used by professional astronomers are located on mountains or remote locations away from city lights to minimize light pollution and atmospheric disturbances. Some observatories, such as those in Chile and Hawaii, are known for having excellent observing conditions due to high altitudes and clear skies. Telescopes are also placed in space, like the Hubble Space Telescope, to avoid atmospheric interference.