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An infrared telescope is a telescope that uses infrared light to detect celestial bodies. Infrared light is one of several types of radiation present in the electromagnetic spectrum . All celestial objects with a temperature above absolute zero emit some form of electromagnetic radiation . [ 1 ]
Infrared astronomy is a sub-discipline of astronomy which specializes in the observation and analysis of astronomical objects using infrared (IR) radiation. The wavelength of infrared light ranges from 0.75 to 300 micrometers, and falls in between visible radiation, which ranges from 380 to 750 nanometers, and submillimeter waves.
Space telescopes do not suffer from this handicap, and so outer space is considered the ideal location for infrared astronomy. The infrared portion of the spectrum has several useful benefits for astronomers. Cold, dark molecular clouds of gas and dust in our galaxy will glow with radiated heat as they are irradiated by imbedded stars. Infrared ...
The near-infrared can be collected much like visible light; however, in the far-infrared and submillimetre range, telescopes can operate more like a radio telescope. For example, the James Clerk Maxwell Telescope observes from wavelengths from 3 μm (0.003 mm) to 2000 μm (2 mm), but uses a parabolic aluminum antenna. [ 20 ]
The NASA Infrared Telescope Facility (right) is an example of a telescope that operates only at near-infrared wavelengths. Main article: Optical astronomy Historically, optical astronomy, which has been also called visible light astronomy, is the oldest form of astronomy. [ 59 ]
The Large Ultraviolet Optical Infrared Surveyor, commonly known as LUVOIR (/ l uː ˈ v w ɑːr /), is a multi-wavelength space telescope concept being developed by NASA under the leadership of a Science and Technology Definition Team.
The James Webb Space Telescope (JWST) is a space telescope designed to conduct infrared astronomy. As the largest telescope in space, it is equipped with high-resolution and high-sensitivity instruments, allowing it to view objects too old, distant , or faint for the Hubble Space Telescope . [ 9 ]
In astronomy, a photometric system is a set of well-defined passbands (or optical filters), with a known sensitivity to incident radiation.The sensitivity usually depends on the optical system, detectors and filters used.