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Spectral Resolution

(R, 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.

The Resolving Power is defined as:

    λ
R = ——
    Δλ

Examples:

  • STIS (HST): distinguishes 0.17nm resolution in a 1000nm wave (yielding 5900 as the resolving power).
  • CRIRES (ESO VLT): a resolving power up to 100,000.

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

Referenced by:
Anglo-Australian Telescope (AAT)
Víctor M. Blanco Telescope
CRIRES
Cross Dispersion Spectrograph
Double-Line Spectroscopic Binary
European Extremely Large Telescope (E-ELT)
European Southern Observatory Very Large Telescope (ESO VLT)
Fine Structure
Gran Telescopio Canarias (GTC)
HCI
HRS
Interstellar Medium Absorption Profile Spectrograph (IMAPS)
Keck Planet Finder (KPF)
Las Cumbres Observatory (LCO)
Spectral Band
Spectroscopy
SPHEREx
TripleSpec (TSpec)
Tubingen Ultraviolet Echelle Spectrometer (TUES)
James Webb Space Telescope (JWST)

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