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.
SOFIA is an infrared telescope in an aircraft, shown here in a 2009 test
High on the Chajnantor Plateau, the Atacama Large Millimeter Array provides an extraordinary place for infrared astronomy.
Hubble infrared view of the Tarantula Nebula.
Artist impression of galaxy W2246-0526, a single galaxy glowing in infrared light as intensely as 350 trillion Suns.
Observational astronomy is a division of astronomy that is concerned with recording data about the observable universe, in contrast with theoretical astronomy, which is mainly concerned with calculating the measurable implications of physical models. It is the practice and study of observing celestial objects with the use of telescopes and other astronomical instruments.
Mayall telescope at Kitt Peak National Observatory
An assembly in Estonia to observe meteors
Overview of types of observational astronomy by observed wavelengths and their observability.
Ultra HD photography taken at La Silla Observatory
