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or Drop a spectrum (two-column ASCII or FITS) ASCII rows should contain wavelength and flux (comment lines starting with #, %, ;, or // are ignored). FITS 1-D image and binary-table spectra are supported; if a file holds several, you'll be asked which to load.

Line List

Show Line Rest wavelength (Å) Velocity (km/s) Shifted/Observed wavelength (Å) Color

Deleted Sections

Fitted line profiles