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Spectrometer sensitivity

  1. Mar 21, 2005 #1
    Can someone estimate how sensitive a spectrometer has to be in order to measure the velocity spectra of Io through a 0.7m focal lenght refractor telescope (radius 70mm) of during optimal conditions? :smile:
    Last edited: Mar 21, 2005
  2. jcsd
  3. Mar 21, 2005 #2


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    What do you mean by sensitivity? Do you mean resolution? What absorption/emission line are you planning to observe to measure the velocity?
  4. Mar 22, 2005 #3
    I was thinking of the Magnesium and Hydrogen emission bands...

    By sensitivity I mean for the spectrometer to produce a spectra sufficient to compare the emission lines :smile:
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