Distance and extinction corrected SEDs showing the progenitor system of M31N 2008-12a (low luminosity black points), compared to the evolving SED of the 2014 eruption (black points, t ~ 0 days; red points, t ~ 1 days; blue points, t ~ 2 days; and grey points t ~ 3 days). Units chosen for consistency with similar plots in Schaefer (2010, see their Fig. 71) and DWB14 (see their Fig. 4). The central wavelength locations of the Johnson-Cousins, HST, and Swift filters are shown to assist the reader. Left-hand plot is the low extinction scenario, where only the line-of-sight (Galactic) extinction towards M31 is considered (; Stark et al. 1992). The right-hand plot considers an additional component of extinction internal to M31 (, ; Montalto et al. 2009).