How is the Spitzer telescope different from a regular cosmic telescope?

The Spitzer telescope has a unique way of looking at space, as it is designed to receive penetrating infrared light, allowing it to observe the formation of stars and planets in thick interstellar clouds.

It can be used in space, which is more convenient for the exploration of space, and it is really too useful to use.

The Spitzer telescope is an infrared detector, and ordinary telescopes are optical detectors.

There must be a certain difference in this case, first of all, the degree of distance from this angle.

I believe that many people who are interested in astronomy know that the Spitzer telescope is very famous, of course, it is still very different from ordinary cosmic telescopes, so what is the difference? Let's talk about it in detail. <>

First of all, the Spitzer telescope is named after the physicist Pitzer, who was the first physicist to advocate putting a cosmic telescope into spaceOf course, this also provides a better development direction for subsequent cosmic telescopes, Spitzer telescope is different from other cosmic telescopes, mainly in that it is infrared detection, while general cosmic telescopes are basically optical detection, which is also the biggest difference between the two. <>

At the same time, the Spitzer telescope was also the first telescope to orbit synchronously with the Earth, and it was placed in space, but unlike other telescopes, it was placed on the far side of the EarthIn this way, when the earth revolves around the sun, it can avoid being irradiated by the sun, which can play a certain role in preventing high temperatures, and of course, the earth is equivalent to its cooling, which can better ensure the realization of the telescope's function. <>

In short, the Spitzer telescope is different from ordinary cosmic telescopes in terms of shape, size and specifications, which is mainly related to the design environment at that time, and with the development of science and technology, today's cosmic telescopes have also reached a certain depth, and the Spitzer telescope has been improved to a certain extent, and some of the deficiencies have been made up accordingly, so that it has also played a better role in the exploration and research of outer space.

The Spitzer telescope uses infrared rays for distant vision, while the ordinary night is based on the principle of optics, which is the biggest difference between the two.

The Spitzer telescope mainly observes the infrared band of celestial objects.

Its observation wavelength range is 3 microns to 180 microns, and because the earth's atmosphere absorbs some infrared rays, and the earth itself emits infrared rays due to blackbody radiation, it is impossible to obtain infrared data on the earth's surface. It has a total length of about 4 meters, a total weight of about 865 kilograms, a primary mirror of 1 meter, and 3 observation instruments for extremely low temperatures.

In order to avoid infrared interference from the observation results due to the blackbody radiation of the telescope itself, the temperature of the observation instrument must be reduced to close to absolute zero, in addition to avoid the infrared interference of solar heat energy and the earth itself, the telescope itself also contains a protective cover, and the position of the telescope in space is deliberately arranged in the orbit of the earth around the sun, and it moves far behind the earth with the earth.

Celestial Introduction:

For example, the sun, planets, satellites, asteroids, comets, meteors, interplanetary matter in the solar system, stars, star clusters, nebulae, interstellar matter in the Milky Way, and extragalactic galaxies, galaxy clusters, superclusters, intergalactic matter, etc. The infrared, ultraviolet, radio, X-ray and ray sources discovered by radio and space detection methods are also celestial bodies.

Since the celestial body is not a mass and has a certain size and shape, the mutual attraction and rotation centrifugal force between the particles inside the celestial body change the shape of the celestial body and the density distribution of the material inside, and also have an impact on the rotational motion of the celestial body. The theory of the shape and rotation of celestial bodies is mainly to study the shape and rotation of celestial bodies under the action of the gravitational attraction of Oki Sakura.

I'm coming to you! This is the most advanced infrared space telescope to date. Launched on 25 August 2003, it was the last telescope in NASA's "Large Observatory" program to go into space, following the Hubble Optical Space Telescope, the Chandra X-ray Space Telescope and the Compton Gamma Ray Space Telescope.

The Spitzer telescope is named after the late Princeton University astrophysicist Lyman Spitzer. Spitzer is considered one of the most influential scientists of the 20th century. In the 40s of the last century, he first proposed that Qi Chun put the telescope into space to eliminate the occlusion effect of the earth's atmosphere, which directly led to the birth of the "Hubble" space telescope.

The Spitzer's first observations** reveal details that were previously unavailable with other observation tools. For example, one photograph shows a cloud of gas and dust in the "IC1396" nebula, located 2,450 light-years from Earth. For the first time, the Spitzer telescope has discovered that this opaque cloud hides young stars that have never been seen before.

The other is an observation of the spiral galaxy "M81", which is 12 million light years away from Earth, and the region of new star formation on the spiral arm extending from the galaxy can be discerned.

This batch of ** has won praise from the scientific community. Dr. Bakar of the Institute for Advanced Study in Princeton, USA, pointed out that the Spitzer telescope is expected to help scientists observe things that humans have never seen before, "which will change the way astronomers conduct astronomical research."

The Spitzer telescope uses liquid helium as a coolant, and its observation instruments can detect the faint infrared radiation, or heat, emitted by cold and distant celestial bodies obscured by dust and other objects by working at extremely low temperatures.

For others, you can also refer to the encyclopedia.

Hope it helps!

First of all, the Spitzer telescope is named after the physicist Pitzer, who was the first physicist to advocate putting a cosmic telescope into spaceOf course, this also provides a better development direction for subsequent cosmic telescopes, Spitzer telescope is different from other cosmic telescopes, mainly in that it is infrared detection, while general cosmic telescopes are basically optical detection, which is also the biggest difference between the two.

At the same time, the Spitzer telescope was also the first telescope to orbit synchronously with the Earth, and it was placed in space, but unlike other telescopes, it was placed on the far side of the EarthIn this way, when the earth revolves around the sun, it can avoid being irradiated by the sun, which can play a certain role in preventing high temperatures, and of course, the earth is equivalent to its cooling, which can better ensure the realization of the telescope's function.

In short, the Spitzer telescope is different from ordinary cosmic telescopes in terms of shape, size and specifications, which is mainly related to the design environment at that time, and with the development of science and technology, today's cosmic telescopes have also reached a certain depth, and the Spitzer telescope has been improved to a certain extent, and some of the deficiencies have been made up accordingly, so that it has also played a better role in the exploration and research of outer space.

There is a big difference.

It is a telescope with a diameter of 85 centimeters that is capable of passively cooling in space to absolute zero above 26 degrees. (26 Kelvin); The liquid helium cryostat further cools the three instruments, the infrared array camera, the multi-band imaging photometer and the infrared spectrometer can reach Kelvin. The Spitzer telescope is in an unusual orbit around the Earth.

It is pulled by the gravitational pull of the Earth and slowly moves away from the Earth. It is now about two-thirds of the way to the other end of Earth's orbit.

The Spitzer telescope is an infrared detector, while a normal cosmic telescope is an optical detector.

The Spitzer telescope is an infrared detector, while the general cosmic telescope is basically an optical detector.

The Spitzer telescope is named after Spitzer himself, and it mainly relies on infrared detection, while cosmic telescopes rely on optical detection.

The Spitzer telescope is infrared-detected, while ordinary cosmic telescopes are mostly optical.

The Spitzer telescope is an infrared detector, and ordinary telescopes are optical detectors.

The Spitzer Space Telescope, the first space telescope to operate synchronously with Earth, is scheduled to serve in space for five years, but NASA hopes it will have an extended working life.

Its orbit is also very unique, it hides behind the Earth and rotates around the Sun at the same angular velocity as the Earth. This orbit protects the telescope from direct sunlight, which provides a natural cooling source for the telescope, which can reduce the weight of the telescope itself, but also save money. Although Spitzer and Hubble are both space telescopes, Hubble mainly observes optical objects, while Spitzer mainly observes the infrared band of celestial objects.

The so-called infrared refers to the ability of telescopes to detect infrared radiation emitted by targets. Spitzer's infrared detection is extremely sensitive, with wavelengths between 3 microns and 180 microns catching infrared radiation in the "eye". This band has always been a "blind spot" for ground-based telescopes because the radiation within its range will be blocked by the Earth's atmosphere when it reaches the ground.

As a result, Spitzer was able to detect objects in the universe that are difficult to perceive, such as faint small stars. Compared with optical astronomical observation equipment, Spitzer's infrared "eye" can penetrate dust and gas, and see the infinite mysteries hidden behind them.

The Spitzer Space Telescope has a total length of about meters, weighs 950 kilograms, and has a primary mirror aperture of 85 centimeters, made of beryllium. In addition to this, there are 3 observation instruments, namely:

1. Infrared array camera (IRAC), with a size of 256 256 pixels, works in 4 bands of 8 microns.

2. Infrared spectrometer (IRS), which consists of 4 modules, working in microns (low resolution), microns (high resolution -40 microns (low resolution) and 19-37 microns (high resolution).

3. Multi-band imaging photometer (MIPS), working in the far-infrared band, is composed of 3 detector arrays, with a size of 128 128 pixels (24 microns, 32 pixels (70 microns) and 2 20 pixels (160 microns).

4. In order to avoid infrared interference emitted by the telescope itself, the temperature of the primary mirror has cooled down. The telescope itself is also equipped with a protective cover to avoid infrared interference from the sun and the earth.

5. The silver disk is filled with a large amount of dust and gas, blocking visible light, so it is impossible to directly observe the area near the center of the Milky Way with optical telescopes on Earth. Infrared light has a longer wavelength than visible light and is able to penetrate dense dust, so infrared observations can help understand the core of the Milky Way, star formation, and extrasolar planetary systems.

Thanks to its large array of infrared detectors, the $1.2 billion space infrared telescope can extend its range by millions of times, and even pass through air masses and dust to analyze the birth and death of stars, helping scientists unravel the mysteries of unknown objects and estimate what the early universe looked like.