Astrophysics (index)about

spectral resolution

(resolution)
(measure of a spectrograph's ability to resolve features of the spectrum)

Spectral resolution is a measure of a spectrograph's ability to distinguish features in the spectrum, typically noted as Δλ, meaning the smallest division in wavelengths that the spectrograph can distinguish, i.e., a distance, e.g., in nm.

The resolving power (R) is defined as:

    λ
R = ——
    Δλ

(These are standard definitions which do not match all common practice: an instrument's spectral resolution is often described using the ratio R rather than the distance measure.)

Examples:


(instruments,measure,EMR,specification,spectrography)
http://en.wikipedia.org/wiki/Spectral_resolution

Referenced by:
Anglo-Australian Telescope (AAT)
BigBOSS
Víctor M. Blanco Telescope
Chandra X-ray Observatory (CXO)
continuous absorption
CRIRES
cross dispersion spectrograph
double-line spectroscopic binary
European Extremely Large Telescope (E-ELT)
European Southern Observatory Very Large Telescope (ESO VLT)
fine structure
Gemini Observatory
Gran Telescopio Canarias (GTC)
H-alpha (Ha)
HARPS
HCI
HERMES
Hobby-Eberly Telescope (HET)
NEWS
HRS
Hubble Space Telescope (HST)
Interstellar Medium Absorption Profile Spectrograph (IMAPS)
IRTF
Keck Planet Finder (KPF)
Large Binocular Telescope (LBT)
Las Cumbres Observatory (LCO)
Lynx
Magellan Telescopes
Mercator Telescope
Multi-object Optical and Near-IR Spectrograph (MOONS)
New Technology Telescope (NTT)
Southern African Large Telescope (SALT)
spectral band
spectroscopy
SPHEREx
SPICA
Telescopio Nazionale Galileo (TNG)
TripleSpec (TSpec)
Tubingen Ultraviolet Echelle Spectrometer (TUES)
James Webb Space Telescope (JWST)
William Herschel Telescope (WHT)

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