Average quv continuum polarization calculation for the unpolarized standard star HD 38393 observed January 10th 2013. The quv spectra are shown over the entire HiVIS wavelength range. The dominant factor is the typical spectrograph calibration in the charge shuffling configuration. There were 10 complete measurements recorded at 4 Hz modulation rates recorded and then averaged. Certain spectral orders are shown in color for direct comparison with Figs. 7 and 6. See text for details.