Close-up view of a region including two overlapping orders in the 564-nm setting for HD 23180 for both reduction “A” (bottom red trace) and reduction “B” (top black trace). The small jump in the continuum at approximately 5855 Å seen in reduction B (top black trace) is due to imperfect merging of two echelle orders. The apparent difference in S/N is due to alternative choices of wavelength sampling.