Regions of the spectra obtained of Lulin on UT 2009 February 14 that contain the forbidden oxygen lines at 5577 Å (top row), 6300 Å (middle row), and 6364 Å (bottom row). Note that the cometary line appears blueward of the telluric in all plots due to Doppler shifting caused by the comet’s geocentric velocity. The data are represented in the same ways described in Figure 4. In the top left panel, the weaker features surrounding the two oxygen lines are due to emission from C₂.