Telescopes

The main advantage would be the absence of an atmosphere. Any telescope on earth can only "see" electromagnetic (light) waves after they have travelled through the atmosphere, losing some of their directional integrity, which distorts the image seen in earth bound telescopes. Some light waves never make it to the telescope at all.

simplest possible telescope

If you were to think that the big bang was generated by the explosion/implosion of a massive black hole then you could affirm that there were no last black holes because none have actually died yet, or you probably wouldn't be here (in your form, it may be that life has regenerated after it's distruction in another way).

So no black holes have actually died from the last big bang.

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.

The difference between the 10mm and 20mm lenses is the focal length they provide. The 10mm lens will give you higher magnification and a narrower field of view, while the 20mm lens will give you lower magnification and a wider field of view. Choose the lens based on your observing preferences and the object you want to view.

Theoretically it can be seen in perfect conditions with perfect eyesight, but most people would require binoculars to see Uranus. I saw it a few weeks ago, using 7 x 50 binoculars, near the star 60 piscium.

The shape of the lens means light near the top of the lens is bent down and light near the bottom of the lens is bent up. Somewhere inside the tube the light beams cross, but before they can spread out again the eyepiece lens bends the light beams again and sends them to the eye.

Yes, but it has to be a pretty good telescope, and you have to know just where to look. Neptune will look like a fairly faint star, you wouldn't know it was a planet unless you waited for days and observed it moving.

There are quite a few telescopes in space right now like the Hubble space telescope, Chandra X-Ray observatory, Spitzer space telescope, FERMI space telescope, the Herchel observatory, WISE telescope and the James Webb space telescope will soon be launched in 2014.

The Keck Observatory is located near the summit of Mauna Kea on the Big Island of Hawaii. It consists of two telescopes, Keck I and Keck II, which are among the largest and most scientifically productive telescopes in the world.

The newest telescope invention is the James Webb Space Telescope, scheduled to launch in December 2021. It is designed to be the premier observatory of the next decade, serving thousands of astronomers worldwide.

The x-ray telescope was not invented by one individual, but rather it was developed by various scientists and engineers over time. However, one significant early contributor to x-ray astronomy was Hans Wolter, a German physicist who designed the Wolter telescope structure that became the basis for many x-ray telescopes.

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.

If the mirror is convex (bulges out, like a ball), objects in the mirror will appear smaller or further away, but the mirror will show a larger scene (called a wider field of view), including objects that a flat mirror would miss around the edges.

If the mirror is concave (like the inside of a dish), it can magnify images or focus light onto a small spot. A large concave mirror can focus sunlight and produce a very hot spot.

Hi ,

A reflective scope uses mirrors to focus the image and the light while a refractive scope uses curved glass lenses to focus the light and the image. Generally the reflector telescope is better for deep sky viewing and the refractor is better for lunar and planetary viewing. You can also find a compound telescope which uses both glass and mirrors which is better for general viewing.

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Chromatic aberration is a common issue in photography and optics, where different colors focus at different distances, leading to color fringing around edges. It can affect various design subjects such as photographs, digital images, and printed materials where precise color reproduction is essential. To reduce chromatic aberration, designers can use high-quality lenses, calibration tools, and software corrections during the design process.

HST has never been brought back to Earth since it was deployed, though bringing it back to Earth onboard a Shuttle after the mirror flaw was discovered was seriously discussed at NASA HQ.

In the end, the cost and risk of damage to HST should such a flight have occurred, would've outweighed the benefits of its observations to the scientific community and the Earth as a whole.

HST's current life will end when her gyros finally fail, as it requires the gyros to keep the telescope stationary for precise stellar observations. At that point (estimated to be sometime in the next 5-10 years), HST will be brought into the Earth's atmosphere for a controlled descent burnup over the ocean.

The Spitzer Space Telescope stays cool by using a passive cryogenic system that includes a large dewar filled with liquid helium to keep its instruments cold. The telescope is also shielded from the Sun and Earth by a sunshade to prevent it from heating up. Additionally, the telescope is designed to minimize heat-generating components and uses a combination of reflective and emissive materials to regulate temperature.

People have observed Halley's comet through telescopes, spacecraft missions, and by tracking its trajectory through the sky. Amateur astronomers also observe the comet during its periodic appearances every 75-76 years, providing valuable information about its behavior and characteristics.

Using the Hubble Space Telescope we have seen 13 billion light years into space, these are some of the very first galaxies to form after the big bang. [Search for "hubble space telescope ultra deep field images" to see the actual images.]

Although technology is always improving, we can never see much further than this point in time.

The problem is the time it takes for light to travel to Earth. The light we see from these very first galaxies have been travelling for 13 billion years to reach us, so really we are looking back in time. In them 13 billion years the light has been travelling to us, the universe has already expanded another 13 billion years. The reality is that many of the stars that make up these galaxies no longer exist in the same way we are seeing them today.

Theoretically, if the edge of the universe emitted visible light and stopped expanding today, we would still have to wait 13.7 billion years (the current age of the universe) before we would be able to notice. Therefore how far we can see is always governed by the time it takes for light to reach us.

If you think about it - the light we see from these very first galaxies was emitted before life and the Earth even existed! Bare in mind that light travels so fast it could go around the Earth 7 times in 1 second...

Fossil fuels are primarily composed of hydrocarbons, which are molecules made up of hydrogen and carbon atoms. The main types of fossil fuels include coal, oil, and natural gas, all of which were formed from the remains of ancient plants and animals that underwent geological processes over millions of years.

A reflecting telescope is an optical telescope which uses mirrors to bring the light to a focus. The first one was designed by Isaac newton.

Photography relies on principles of light, optics, and technology determined through scientific research and understanding. Concepts such as exposure, focal length, and depth of field are all based on scientific principles. Advances in science have also driven the development of camera technology, leading to improvements in image quality and usability.