The table below provides the line spread function for COS at various wavelengths.
For more information on COS spectral resolution see section 5.1.4 of the COS IHB, COS ISR 2009-01 and COS ISR 2011-01.
Line Spread Functions (LSF) or instrumental profiles give the detailed distribution of light along the primary dispersion axis.
| FUV | NUV |
| G130M | All Gratings |
| G140L | |
| G160M |
| FUV | NUV |
| G130M | |
| G160M |