Question

How does a infrared telescope works and what are some advantages and disadvantages?

Answer 1

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.

It is electromagnetic radiation that is at longer wavelengths than the optical radiation we see with our eyes. ... Optical and infrared telescopes are very similar in construction, but infrared telescopes like the IRTF are designed to minimize the amount of heat that is emitted by the telescope itself.