Astrophysics (Index)About

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 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 dust. Information about the masses provide clues to its makeup.


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

Referenced by pages:
Advanced Composition Explorer (ACE)
Automated Planet Finder (APF)
Ariel 5
Atacama Submillimeter Telescope Experiment (ASTE)
ASTRO-H
Berkeley Extreme and Far-UV Spectrometer (BEFS)
BeppoSAX
Large Altazimuth Telescope (BTA-6)
Cassini
CCAT
Fred Young Submillimeter Telescope (FYST)
Chandra Deep Field North (CDFN)
Chandra Deep Field South (CDFS)
cavity-enhanced absorption spectroscopy (CEAS)
Compton Gamma Ray Observatory (CGRO)
Chandra X-ray Observatory (CXO)
CHIPSat
CONCERTO
COSI
CRIRES
Caltech Submillimeter Observatory (CSO)
Dawn
Deep Space 1 (DS1)
European Southern Observatory Very Large Telescope (ESO VLT)
Euclid
Gaia
Galileo
Green Bank Telescope (GBT)
Gemini Observatory
GRANAT
grating
HEAO-2
Herschel Space Observatory
NEWS
International Cometary Explorer (ICE)
imaging Fourier transform spectroscopy (IFTS)
imaging spectrometer
INTEGRAL
integral field spectrograph
Infrared Space Observatory (ISO)
James Clerk Maxwell Telescope (JCMT)
JUICE
Keck Observatory
potassium/thorium ratio (K/Th ratio)
line blanketing
Mars Express
Mars Observer (MO)
mass spectrometer
MAVEN
Mars Exploration Rover (MER)
Mars Global Surveyor (MGS)
Magnetospheric Multiscale Mission (MMS)
MMX
Mopra Telescope
Mars Pathfinder (MPF)
Mars Science Laboratory (MSL)
NEAR Shoemaker (NEAR)
neutron spectrometer
New Horizons (NF1)
particle spectrometer
Pioneer Venus Orbiter (PVO)
Rosalind Franklin
Rosetta
radial velocity method
SMART-1
Solar Maximum Mission (SMM)
SOFIA
Solar and Heliospheric Observatory (SOHO)
Solar Orbiter (SolO)
spectral correlator
spectrograph
spectrography
spectrometry
spectroscope
spectroscopy
Spitzer Space Telescope (SST)
Suzaku
Tomographic Ionized-carbon Mapping Experiment (TIME)
Thirty Meter Telescope (TMT)
Telescopio Nazionale Galileo (TNG)
Tubingen Ultraviolet Echelle Spectrometer (TUES)
Upper Atmosphere Research Satellite (UARS)
United Kingdom Infrared Telescope (UKIRT)
Ulysses
Voyager
James Webb Space Telescope (JWST)
XMM-Newton
Yohkoh

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