Astrophysics (Index)About

millimeter astronomy

(millimeter wave astronomy)
(observation and analysis at wavelengths on the order of a millimeter)

The term millimeter astronomy (or millimeter wave astronomy) indicates the astronomy of observing EMR wavelengths in the general region of a few millimeters, perhaps including substantial fractions of a millimeter. Sometimes the term is used virtually as a synonym for submillimeter astronomy. Many telescopes span both these ranges, and the choice of term incorporated in the telescope's name seems to be a matter of preference and the phrase millimeter/submillimeter astronomy is sometimes used as more descriptive. By definition, millimeter astronomy overlaps microwave astronomy.

Cosmic microwave background studies fall in this class. Portions of this wavelength-range have the advantage of falling in atmospheric windows allowing observation from the ground, and high altitudes and dry air are advantageous. It has an advantage over longer-wave radio astronomy in that the angular resolution produced by interferometry depends upon the wavelength, shorter being better resolution, and millimeter/submillimeter interferometry such as that of ALMA are producing images with very fine detail.


(science,astronomy,radio,millimeter)
Further reading:
http://www.iram-institute.org/EN/content-page-33-4-33-0-0-0.html

Referenced by pages:
black hole shadow
BIMA telescope
Fred Young Submillimeter Telescope (FYST)
infrared cirrus
confusion limit
KID
microwave
Max Planck Institute for Radio Astronomy (MPIR)
NANTEN2
observational astronomy
precipitable water vapor (PWV)
radio astronomy
Swedish-ESO Submillimetre Telescope (SEST)

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