This is the instrument performance plot for the FORS2 LSS spectral resolution. From a wavelength calibrated LSS arc lamp exposure, the mean spectral resolution from all lines in the catalog is computed. Each single spectral resolution is computed as the ratio between
the arc lamp line wavelength and its FWHM.  The values trended here are for the red sensitive MIT detector, the 300V grism with no filter and a slit width of 0.29".

</font><p><font size="2">On <b>2018-08-28</b> new pipeline (v.5.3.35) was introduced. The method of calculating spectral resolution changed and the new values are significantly lower.