Tokunaga and Vacca (2005) present isophotal
wavelengths, flux densities, and magnitudes for the standard A0 star Vega (alpha Lyrae).
, we then extracted spectra along isophotal
lines at different galactocentric radii, shown in Figure 12(b).
Our goal was to classify objects at least one isophotal
magnitude fainter than objects classified in previous comparable surveys.