After the wavelength calibration is obtained from an LSS arc lamp exposure,
the wavelength corresponding to the central CCD pixel is calculated. The
values trended here are for the red sensitive MIT detector, the 300V grism with no filter and a slit width of
More information can be found on
the plot tutorial page
Click on any of the plots to see a close-up version.
If applicable, the latest values from Paranal ops logs are plotted as blue dots. More information about those values, including a download option, is available in the OPS column.
The latest date is indicated on top of the plot, data points belonging to that date are specially marked.
statistical averages are indicated by a solid line, and thresholds by broken lines
outliers are marked by a red asterisk. They are defined as data points outside the
"aliens" (= data points outside the plot Y limits) are marked by a red arrow (↑ or ↓)
you can download the data for each parameter set if the 'Data downloads' link shows up