Astrophysics (index)

Spectrometer

(device to measure light by wavelength across its spectrum)

The term Spectrometer is for a device that measures a spectrum, e.g., the Intensity of light at different Wavelengths. As such, a Spectroscope or Spectrograph is a spectrometer. Those two terms originally distinguished between a device that you look through (Spectroscope) and one that recorded the spectrum on film (Spectrograph), but modern advanced instruments virtually always focus the spectrum on a CCD or similar sensor, allowing the spectral data to be transmitted, recorded and analyzed electronically, and any of the three terms may be used. The terms may be used for analyzers of any part of the Electromagnetic Radiation (EMR) spectrum, but when used for other than Visible Light, that is usually mentioned, e.g., the phrase "X-ray Spectrometer".

The term Mass Spectrometer is used for a device that measures the relative number of particles entering according to mass. Thus it does not concern light or other EMR. Space probes often include mass spectrometers to analyze material collected, such as Cosmic Dust. Information about the masses provide clues to its makeup.


(color,EMR,instrument type)
http://en.wikipedia.org/wiki/Spectrometer
http://spie.org/publications/fg08_p02_spectrometerspectroscopespectrograph

Referenced by:
Advanced Composition Explorer (ACE)
ASTRO-H
Cassini
CCAT
CCAT Prime (CCAT-p)
Compton Gamma Ray Observatory (CGRO)
Chandra X-ray Observatory (Chandra)
CONCERTO
CRIRES
European Southern Observatory Very Large Telescope (ESO VLT)
Euclid
Gaia
Green Bank Telescope (GBT)
Grating
HEAO-2
Herschel Space Observatory
NEWS
Hubble Space Telescope (HST)
Imaging Spectrometer
INTEGRAL
Integral Field Spectrograph
Infrared Space Observatory (ISO)
James Clerk Maxwell Telescope (JCMT)
Keck Observatory
Line Blanketing
Mars Express
Mass Spectrometer
New Horizons
Solar Maximum Mission (SMM)
Solar and Heliospheric Observatory (SOHO)
Spectral Power Distribution (SPD)
Spectrograph
Spectrography
Spectrometry
Spectroscope
Spectroscopy
Spitzer Space Telescope (SST)
Suzaku
Tomographic Ionized-Carbon Mapping Experiment (TIME)
Thirty Meter Telescope (TMT)
Telescopio Nazionale Galileo (TNG)
United Kingdom Infrared Telescope (UKIRT)
Voyager
James Webb Space Telescope (JWST)
XMM-Newton
Yohkoh

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