What Are Infrared Telescopes?
An infrared telescope is a telescope that receives infrared radiation from celestial bodies. The appearance structure is similar to the optical mirror, and some can be used for infrared observation and optical observation. However, when making infrared observations, its terminal equipment is very different from optical observations. It is necessary to use modulation techniques to suppress background interference, and to use interference methods to improve its resolution.
- An instrument that can detect people, objects, and vehicles moving 500 meters or more away under extreme weather conditions. A kind of telescope. Also called passive infrared telescope. Passive infrared telescopes are characterized by: they do not interfere with each other; they can track, do not emit signals; low power consumption, long distance, narrow beam; easy to install, fast response. Infrared eye protection in perimeter, border and fence observation, battlefield direction finding system, fire and explosion detection, traffic calculation flow and control, and
- Infrared telescope with ordinary
- Infrared telescope can see
- Infrared observation imaging is also quite different from optical images. Because the atmosphere of the earth has only seven narrow "windows" for infrared, infrared telescopes are often placed in high mountain areas. Most of the best ground-based infrared telescopes in the world are concentrated in Mauna Kea, Hawaii, USA, and they are the research centers of world infrared astronomy. The Keck Telescope built in 1991 is the largest infrared telescope.
- The earliest infrared observations date back to the end of the 18th century. Due to the absorption and scattering of the Earth s atmosphere, infrared observations on the ground are limited to a few near-infrared windows. Therefore, to obtain more information in the infrared band, space infrared observations must be performed. Only in the second half of the 19th century did infrared astronomy observations really begin. Initially, high-altitude balloons were used, and later developed into aircraft carrying infrared telescopes or detectors for high-altitude observations. On January 23, 1983, the United States, Britain, and the Netherlands jointly launched the first infrared astronomical satellite IRAS. Its main body is a 57 cm telescope, which is mainly engaged in sky surveying. The success of IRAS has greatly promoted the development of infrared astronomy at all levels. Until now, the observation source of IRAS is still a hot target for astronomers. On November 17, 1995, the infrared space observatory ISO launched by the cooperation of Europe, the United States and Japan launched. The main body of ISO is an R-C telescope with a diameter of 60 cm. Its functions and performance are much improved over the IRAS line. Compared with IRAS, ISO has a wider band range, higher spatial resolution, higher sensitivity (about 100 times that of IRAS), and more features. [4]