Ocean Optics Overture - Manual (Page 23)

Chapter 2: Overture Software Icons and Menus
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Reference Lines
Emission lines are referenced using the line spectra library.
Standard spectral lines are taken from NIST data. They are useful for identifying emission peaks from
ionised gases or vapors. The line height is proportional to the relative probability of the transition causing
the emission. Only the strongest lines are shown.
Select the lines you want to display using the check boxes, then click Add or Delete to add them to or
delete them from the list.
The fine green lines are He reference lines. The first thing to notice is that the spectrometer is correctly
calibrated; the lines match the peaks.