I am confused how to convert from ${\rm cm^{-2}\,s^{-1}\,Å^{-1}}$ to ${\rm erg\,cm^{-2}\,s^{-1}\,Å^{-1}}$. How do I do that?

  • 3
    $\begingroup$ The first is a number flux, while the second is an energy flux. So you need to know the energy of the photons. $\endgroup$
    – pela
    Commented Jun 22, 2021 at 23:01
  • $\begingroup$ Welcome to astronomy SE, I converted your units to a more readable format. $\endgroup$
    – B--rian
    Commented Jun 23, 2021 at 14:22
  • $\begingroup$ Don't be disheartened by the fact that your first question got immediately closed, I would be happy to vote for reopen if you edit in a bit more context where those units occur and what you are trying to do. $\endgroup$
    – B--rian
    Commented Jun 23, 2021 at 19:59


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