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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)
Gran Telescopio Canarias (GTC)
HCI
HRS
Keck Planet Finder (KPF)
Las Cumbres Observatory (LCO)
Spectral Band
Spectroscopy
SPHEREx
TripleSpec (TSpec)
James Webb Space Telescope (JWST)

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