Changes

The uppermost plot window in the QL GUI shows the raw 2D Spectrum as it comes off the telescope. The GUI attempts to scale this in a sensible way (using IRAF/ds9's zscale algorithm, by default). Alternate scaling may be selected by choosing from the drop down menu on the right of the panel and pressing "Update". Manual values of z0 and z1 may be chosen by entering them in the appropriate boxes and choosing "Manual" as the scaling option. Alternative colour maps may be selected.

The 2D window shows two horizontal cyan lines which should coincide with the upper and lower bounds of the spectrum. These have been manually set for each grating and show the bounds over which analysis will take place. For example, side bands for sky subtraction are truncated at these edges. If these are not in the appropriate place, they may be tuned by editing a configuration file as described ZZZ. These bounds are also used to define where an arc is extracted ZZZ