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+The following spectral diagnostics and tool are available at the Athos FEL
+## Transmission grating spectrometer
+>- [SATOP11-PSAS079](Athos spectral diagnostics/SATOP11 PSAS079)
+## Beamline mono grating spectrometer
+>- [SATOP21-PMOS137](Athos spectral diagnostics/SATOP21 PMOS127)
+>- [SATOP31-PMOS132](Athos spectral diagnostics/SATOP31 PMOS132)
+>### Tools and data processing 
+>- [Spectrometer data processing and channels](Aramis-spectral-diagnostics/Spectral-data)
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