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Telescopes
A telescope is a device used to form images of distant objects. There are two kinds: an optical telescope uses lenses and is known as a refracting telescope or a refractor, and a reflecting telescope, which uses a mirror and is known as a reflecting telescope or a reflector. The earliest telescope was a refractor built by the Dutch eyeglass maker Hans Lippershey. This category is for questions related to telescopes, including using them to view distant planets and objects in space.
1,887 Questions
Is hershelian a type of telescope?
Yes, a Hershelian telescope is a type of reflecting telescope in which the primary mirror is tilted so the observer's head does not block the incoming light.
At the end of the reflecting telescope is a what mirror?
At the end of the reflecting telescope is a primary mirror. This mirror collects and focuses light from distant objects before reflecting it to a smaller secondary mirror or camera for further magnification or analysis.
Why are large telescopes used to study distant galaxies and not small telescopes?
Large telescopes are used to study distant galaxies because they can gather more light, allowing for better resolution and the ability to detect fainter objects. Their larger size also grants them a greater light-gathering capacity, which is essential for observing objects that are billions of light-years away. Additionally, large telescopes offer higher sensitivity and better data collection capabilities, enabling astronomers to analyze and study distant galaxies in greater detail.
Can you study visible light using a radio telescope explain your answer?
No, a radio telescope is designed to detect radio waves, which have much longer wavelengths than visible light. Visible light cannot be studied using a radio telescope as it operates in a different part of the electromagnetic spectrum. To study visible light, astronomers typically use optical telescopes.
How did the galilean telescope works?
The Galilean telescope works by using a convex objective lens to collect light and focus it into a real, inverted image. This image is then magnified by a concave eyepiece lens to make it appear larger. The Galilean telescope produces a non-upright image due to its design.
Why isn't necessary for radio telescopes surface to be as smooth as mirrors?
The reflector of your telescope's mirror DOES need to be finely polished, with no disturbances bigger than a half-wavelength or so. So for optical telescopes, the mirror must be smooth to nanometers.
But for a radio telescope which measures wavelengths in meters or centimeters, a fine wire mesh will generally do the trick. And since radio telescopes tend to be very large, the finer the mesh the lighter the dish can be - and therefore, more easily rotated and pointed.
Can you see a supernova from earth without a telescope?
Yes, under the right conditions, a supernova can sometimes be visible from Earth without a telescope. However, most supernovae are too faint to see with the naked eye, so a telescope or binoculars are usually needed for observation.
How do I use a Galileo FS-102MOH 102mm Telescope?
well, the bottom mirror peice is supposed to reflect, so use the top open part by the eypeice to view objects, as the bottom of it is suppsoed to reflect like a mirror. so keep the bottom looking up as your eyepiece should be on the shaft toward the top
Can you take a telescope on a plane?
Yes, you can typically bring a telescope on a plane as carry-on or checked luggage. It's recommended to pack it securely and check with your airline for any specific guidelines or restrictions they may have for transporting such items.
Yes. It takes energy to move them in the correct direction. In home telescopes, this is done by hand (energy from your muscles), in large telescopes they use some kind of motors to do that.
Why are common pins better to use than optical?
Common pins (such as concrete or steel pins) are better than optical sensors in some applications because they are more durable, affordable, and can withstand harsh environmental conditions better. They also do not require a power source and are easier to install and maintain. Optical sensors, on the other hand, are more sensitive and can detect finer movements or changes in the environment.
What was Caroline herschel job?
Caroline Herschel was a German astronomer who worked as her brother William Herschel's assistant. She made significant contributions to astronomy, discovering several comets and cataloging star clusters and nebulae.
The decisions regarding the use of the Hubble Space Telescope were influenced by economic factors such as funding availability, social factors like public interest and support for space exploration, and cultural factors related to scientific advancement and international collaboration. Ultimately, a balance between these considerations helped shape the decisions on how the telescope would be used.
What is the main advantage of the hubble space telescope?
The main advantage of the Hubble Space Telescope is its ability to capture high-resolution images of celestial objects in visible, ultraviolet, and near-infrared light. This has led to numerous scientific discoveries and advancements in our understanding of the universe.
Can a telescope refract light?
The human eye is a refractor, but the telescope could be either refractor or a reflector.
What are two discoveries Galilee made by using his telescopes?
Galileo discovered the four largest moons of Jupiter, now known as the Galilean moons: Io, Europa, Ganymede, and Callisto. He also observed the phases of Venus, providing evidence for the heliocentric model of the solar system proposed by Copernicus.
Why is Mercury hard to see without a telescope?
Mercury is a small planet, and it is very close to the Sun. So you can only see it immediately before sunrise or right after sunset. You'll need to know WHEN to look, because it's normally lost in the Sun's glare.
What is the best way to obtain astronomical data?
The best way to obtain astronomical data is often through online databases, such as NASA's Astrophysics Data System or the European Space Agency's archives. Many professional organizations also publish data from their telescopes and spacecraft for public use. Additionally, collaborating with astronomers or institutions conducting observations can provide access to specific datasets.
Did Einstein create the first telescope?
No. The first telescopes were made by Hans Lippershey and Zacharias Janssen in 1608. Galileo improved their design and made the first astronomical telescope by 1609. In 1611 Kepler improved the telescope further and in 1616 Zucchi designed the first reflecting telescope. The first radio telescope was made by Reber in 1937. So, as you can see the first telescope was made several hundred years before Einstein.
What telescope has an eyepiece lens and a mirror?
A reflecting telescope has both an eyepiece lens and a mirror. Light enters the telescope and is reflected off the primary mirror to a secondary mirror, which then directs the light to the eyepiece where it is magnified for viewing.
What are the economic moral and cultural implications of this advancement in Space technology?
The advancement in space technology has economic implications such as potential job creation and economic growth through the development of new industries. It has moral implications related to ethical considerations around space exploration, such as issues of environmental impact and equity in access to space. Culturally, it can inspire people, foster international collaboration, and contribute to a sense of interconnectedness and wonder about the universe.
How old is this Ross London telescope it is stamped no 45289?
Most English instrument makers began stamping their names in the late 1800's. Prior to that, they engraved their names. So yours is not older than, say, approximately 1875 earliest. I don't know when Ross started using serial numbers, but since our number is quite high I'd be leaning toward thinking your telescope comes from the early 1900's.
Terrestrial telescopes are generally manned, while space telescopes are unmanned. However, to a greater and greater extent, the people doing the observing are not the people actually manning the telescopes; the observations are done remotely from other universities around the world.
The various space telescopes, such as the Hubble, the Kepler, or the Spitzer, or the soon-to-be-launched Webb, are remotely controlled in the same manner that everything is controlled these days; remotely, via computer.
Can the polar caps and dust storms of Mars be seen with Earth-based amateur telescopes?
There are five other planets that can be seen with the naked eye at some time during the year. Mercury, Venus, Mars, Jupiter and Saturn.
Of these, Mercury is the most difficult to see; the planet is close to the Sun, and is only visible for a few minutes before sunrise or a few minutes after sunset, depending on where it is in its orbit.
What type of image is formed by a reflecting telescope?
I am not sure whether you mean an ordinary optical telescope or a small telescope. You can see a lot through either, and anything you can see in a small telescope can be seen through any other optical telescope. The advantage of a large telescope is often just that it can be used to observe dim nebulae and galaxies.
First off, a warning: NEVER look at the sun with a telescope, unless it is especially set up for the purpose. It will destroy your eyes.
Actually, observing the stars can be fun without a telescope and is a good way to learn about constellations and planets.
You can see some really beautiful things with binoculars. Comets are one good thing, when the are around (you might have to watch the news for this). Also, just looking at a constellation like Coma Berenices, which is not very interesting to the naked eye, can be very memorable. I think it is an astonishingly beautiful, rich field of stars.
A small telescope can give a very nice view of the moon. You do not want to use high power, if you want to see the whole moon, but you can use it to look at craters and so on.
Some of the planets are quite beautiful through a small telescope. Jupiter can be seen at low power, along with four of its moons. If you have access to Sky and Telescope magazine, you will be able to find out when the moons eclipse or occult each other, and this can usually be seen through a small telescope. The rings of Saturn can be seen through a good small telescope, but to get a really nice view, it has to be a good one.
Some small telescopes are especially designed for looking at comets.
Some small telescopes are especially built to look at the Sun. Again NEVER look at the Sun, unless the equipment you have is especially designed for the purpose.
A small telescope can be used to observe some of the galaxies and start clusters. A star cluster sometimes looks rather like a small galaxy, and is quite beautiful. The actual galaxies, however, are much better with bigger instruments. The same is true of nebulae.
One thing you really need to do astronomical observation - and this is by far the most important thing - is to learn about astronomical observation. Learn as much as you can, and the whole thing is much, much more fun. If you can, find a club with experienced observers in it. They do not need to be professional, just experienced.
The most limiting factor in observation is lack of knowledge. The telescope is only secondary.
And, by the way, some things are too big to be seen in a telescope. There is a nebula in the southern sky that is too wide to be seen in a telescope and too dim to be seen by eye. It can be photographed in a camera with a fairly wide angle lens. I don't know, but perhaps a person could see it with a reducing lens (like a magnifying glass, except it makes images smaller).
