Telescopes

There are a number of reasons why the cartoon image of the astronomer peering through his telescope eyepiece is outdated.

1. The advent of film and then digital imaging has made it possible to do long exposures to see things that are invisibly faint to the eye.

2. The astronomer looking through the telescope has no way to accurately record what he sees.

3. Telescope platforms are in the cold, thin air at the tops of mountains. If the air in the observatory was heated, the heat shimmers would degrade the images.

4. Astronomers are people, too; they don't want to spend all of their nights freezing on mountaintops when they can be at home with their families.

5. With computer-controlled telescopes, digital imaging and the Internet, the astronomers can be at home at their universities in the valley and enjoy the social life, and still present last-night's observations on the big screens in their classrooms each afternoon.

Scientists study the Milky Way using various methods, such as radio waves, infrared, and X-ray observations as well as mapping the distribution of stars and gas clouds. By combining data from these different techniques, they can infer the structure and shape of the Milky Way, including its spiral arms, central bulge, and disk. These methods allow scientists to build a comprehensive understanding of our galaxy.

Yes, Hubble is expected to continue operating alongside the James Webb Space Telescope (JWST). While JWST will offer new capabilities in infrared observations, Hubble will continue to provide valuable data in visible, ultraviolet, and near-infrared wavelengths. Both telescopes will complement each other in their respective strengths.

The invention of the telescope is commonly attributed to Hans Lippershey, a Dutch eyeglass maker, who applied for a patent for his device in 1608. However, other individuals such as Galileo Galilei and Thomas Harriot also made significant contributions to the development and improvement of the telescope around the same time.

No further maintenance or upgrade of the Hubble Space Telescope is planned following the last work on it during 2009. It's hoped that Hubble will hold together and continue in operation until the Webb Space Telescope is launched in 2014.

The Hubble Space Telescope was named after the American astronomer Edwin Hubble, who played a crucial role in changing our understanding of the universe by demonstrating that galaxies are moving away from each other.

Light telescopes with a diameter of 30-50 meters are currently planned; probably larger ones will be built in the future. I believe the largest radio telescope has a diameter of about 300 meters. On the other hand, it is possible to connect (through a technique called interferometry) telescopes that are thousands of kilometers apart, so they have the resolving power (but not the light-gathering capacity) of a single telescope that size.

Cheomseongdae is an astronomical observatory in Gyeongju, South Korea. Cheomseongdae means star-gazing tower in Korean. ---- Cheomsongdae is is an astronomical observatory in Gyeongju, South Korea. Cheomseongdae means stargazing tower in Korean. Cheomseongdae is one of the oldest surviving observatories in East Asia, and one of the oldest scientific installations on Earth.

The origin of the word telescope is from the Greek mathematician Giovanni Demisiani. "tele" means far and "scope" means to look or see. For more information see Related Links below.

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A refracting optical telescope uses two lenses, like magnifying glasses, to gather and focus the light carrying the images of the target that's being observed.

The first lens is called the primary lens. It's the larger of two lenses. It's located at the far end of the scope away from the eyepiece where the observer will sight the target. The target's light enters the scope through the primary lens. The Yerkes Observatory in Wisconsin USA is the largest refracting telescope. It's primary lens is a tad over 1 meter in diameter.

The eyepiece at the near end is the second lens. It takes that gathered light from the primary lens, and focuses and magnifies it even further.

So whatever the target might be is magnified many times over. First by the larger lens and then again by the smaller eyepiece lens. So, for example, if the primary lens magnifies by 5X and the eyepiece does it by 10X, the overall magnification is 50X. The two multiply.

Canopus, the second brightest star in the sky, is white or "yellowish-white".

you have to press the cross(X) button on the top right or left corner

The Hubble Space Telescope is located above Earth's atmosphere, which eliminates the distortion caused by atmospheric turbulence. This allows for sharper and clearer images with higher resolution compared to ground-based telescopes. Additionally, Hubble can observe wavelengths of light that are blocked by the atmosphere, providing a more comprehensive view of the universe.

Yes, it is actually nicknamed "the amateur's planet" by many sky watchers, because it is so easily viewed by common telescopes.

"the amateur's planet," "the amateur's planet,"

"the amateur's planet,"

The attraction or repulsion that unlike or like charges have is due to the electrostatic force. Like charges (positive-positive or negative-negative) repel each other, while unlike charges (positive-negative) attract each other. This force is governed by Coulomb's law and is responsible for the interactions between charged particles.

A telescope is an optical instrument used to observe distant objects by collecting and focusing light, while a satellite is a man-made object placed into orbit around Earth or other celestial bodies for various purposes like communication, navigation, and scientific research. Telescopes can be on Earth or in space, while satellites are typically spacecraft launched into orbit.

The main difference between a telescope and a satellite is their location and function. Telescopes are ground-based instruments that observe objects in space from Earth, while satellites are man-made objects that orbit Earth or other celestial bodies to perform various tasks such as communication, weather monitoring, or Earth observation. Telescopes are used for observing distant objects in space, while satellites are used for a wide range of applications beyond just observing space.

Galileo improved the telescope in 1609, by making it more powerful and using it to observe celestial bodies such as the Moon, stars, and planets. His discoveries helped revolutionize our understanding of the cosmos and laid the foundation for modern astronomy.

There are at least two reasons why identical radio telescopes may be built. A mundane reason would to save money by reusing the same design. But the reason why most identical systems are built (not to say that saving money by reusing the design isn't still a factor in these cases) is to construct a "very long baseline interferometer", a type of multiple telescope system that uses properties of electromagnetic radiation (wave interference) to simulate telescopes with much larger apertures. This method attains the angular resolution of the larger telescope, but not the signal sensitivity.

Larger in diameter. The human eye can open to a maximum of about 7mm. Calculate the area of that, and compare it with a 50 diamter mm lens. (A=pi*r^2). Where 3.5 = radius of the pupil and: 25 = radius of the lens pi * 3.5^2 mm = 21.99 mm ^2 (area of a pupil in the dark) pi* 25^2mm = 1963.5 mm^2

Therefore, a 50 mm lens would have 89.29 more light grasp than the eye.

Plane mirrors don't form real images. Concave mirrors and convex lenses do.

Without a real image, you have nothing to expose film to, nothing to project

onto a screen, nothing to capture on a CCD or vidicon, and nothing to look at

with an eyepiece.

The three basic categories of astronomical observation are optical, radio, and space-based. Optical observations involve using telescopes to detect visible light; radio observations involve detecting radio waves from celestial objects; space-based observations are done using telescopes and satellites positioned outside Earth's atmosphere to observe different wavelengths of light.

Thin mirrors distort images less and have a lesser weight. If the mirror isn't very thin, you can expect your image to be distorted and it can take longer to acheive the image you want or need.