spectral_class_a
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spectral_class_a [2019/12/27 21:02] tstibor [Resolving Power & Resolution] |
spectral_class_a [2020/12/09 15:27] (current) |
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| The //resolving power// is defined as $R = \frac{\lambda}{\Delta \lambda}$, where $\lambda$ is the wavelength and $\Delta \lambda$ the wavelength interval defined as the //spectral resolution// | The //resolving power// is defined as $R = \frac{\lambda}{\Delta \lambda}$, where $\lambda$ is the wavelength and $\Delta \lambda$ the wavelength interval defined as the //spectral resolution// | ||
| The spectral resolution is the smallest wavelength interval that can be distinguished and is expressed in | The spectral resolution is the smallest wavelength interval that can be distinguished and is expressed in | ||
| - | wavelength units as Å or nanometers. In addition, it can be expressed as the $\text{FWHM}_{\text{Instrument}} = \frac{\lambda}{R}$. | + | wavelength units as Å or nanometers. In addition, it can be expressed as the $\Delta \lambda = \text{FWHM}_{\text{Instrument}} = \frac{\lambda}{R}$. |
| The FWHM values are measured with SpcAudace at | The FWHM values are measured with SpcAudace at | ||
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| # 65.4526604596 6.58084006378 | # 65.4526604596 6.58084006378 | ||
| </ | </ | ||
| - | and result in a mean FWHM value of $53.11127$ Å. | + | and yields |
| + | $R = \frac{1}{4} (\frac{4860}{65.4526604596} + \frac{4340}{54.6684579023} + \frac{4101}{47.6019613648} + \frac{3966}{44.722014838}) = 82.11821$ | ||
spectral_class_a.1577480568.txt.gz · Last modified: 2020/12/09 15:28 (external edit)
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