Screen shot of x_ydtorgui

• The red line traces the slit edge and the green line indicates where the trace has too large of an error to fit.
• The right-mouse-button (RMB) can be used to extend/truncate the region of the trace to be fit.
• The left-mouse-button (LMB) adjusts brightness/contrast.
• The "DELTRC" button deletes the trace altogether. Below is an example of a bad trace. These often occur to alignment boxes.
• Click on "NEXT" or "PREV" to cycle through the traces.