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K Band

(infrared passband centered around 2.2 microns, or 136 THz)

The term K Band is used in communications as well as astronomy and refers to different ranges. For astronomy, it refers to a Photometric System Passband centered on 2.2 microns (2190nm) or 136 THz within the Near-infrared range, with a Full Width At Half Maximum of 390nm. K may indicate the band or a Filter adhering to the specification.

The letter is also used to indicate the Magnitude of the signal observed through the filter, e.g., citing "K = 1.5".

2.2um136THz564meVK Band

Referenced by:
Astronomical Survey
European Southern Observatory Very Large Telescope (ESO VLT)
Gemini Observatory
Hawaii K-Band Galaxy Survey
Infrared (IR)
Tully-Fisher Relation (TFR)