Astrophysics (Index)About

K band

(K)
(atmospheric window centered around 2.2 microns, or 136 THz)

The term K band is used in communications as well as astronomy, referring to different EMR ranges. Within astronomy, it refers to an atmospheric window in the near-infrared range centered on 2.2 microns (2190 nm) or 136 THz, or a photometric system band aimed at this range, e.g., with a full width at half maximum of 390 nm. In addition to infrared-specific telescopes, many optical telescopes can observe in this range. The letter is also used to indicate the magnitude of the signal observed through the filter, e.g., citing "K = 1.5".


There are at least two uses of the term K band in radio communications.


(infrared,EMR,band,photometry)
Further reading:
http://en.wikipedia.org/wiki/K_band_(infrared)
http://en.wikipedia.org/wiki/K_band
WaveLFreqPhoton
Energy
  
2.2μm136THz564meVK band

Referenced by pages:
astronomical survey
European Southern Observatory Very Large Telescope (ESO VLT)
Gemini Observatory
Hawaii K-band Galaxy Survey
infrared (IR)
KMOS
Mimir
passband
Tully-Fisher relation (TFR)

Index