What is the wavelength of a infrared telescope?

Answer 1

Visible light is about 350-700 nm, so infrared radiation would have a wavelengt above 700 nm (0.7 microns), approximately. It is not a single wavelength, but a wide range of wavelengths. The upper range is about 300 microns. Wavelengths above that are called microwaves.

Answer 2

An infrared telescope itself doesn't have a wavelength as it is not a wave, but a telescope. If you mean however what is the wavelength of a wave in the infrared spectrum, it's approximately between 300 GHz (1 mm) and 400 THz (750 nm).

Answer 3

wavelength of a infra red ray

infrared radiation (IR) is electromagnetic radiation with a wavelength between 0.7 and 300micrometres, which equates to a frequency range between approximately 1 and 430 THz.

The International Commission on Illumination (CIE) recommended the division of optical radiation into the following three bands:

• IR-A: 700 nm-1400 nm (0,7 µm - 1.4 µm)
• IR-B: 1400 nm-3000 nm (1.4 µm - 3 µm)
• IR-C: 3000 nm-1 mm (3 µm - 1000 µm)

Answer 4

From about 1 micrometer to 1000 micrometers.