  We present initial results from a program aimed at establishing a network of
hot DA white dwarfs to serve as spectrophotometric standards for present and
future wide-field surveys. These stars span the equatorial zone and are faint
enough to be conveniently observed throughout the year with large-aperture
telescopes. Spectra of these white dwarfs are analyzed to generate a
non-local-thermodynamic-equilibrium (NLTE) model atmosphere normalized to HST
colors, including adjustments for wavelength-dependent interstellar extinction.
Once established, this standard star network will serve ground-based
observatories in both hemispheres as well as space-based instrumentation from
the UV to the near IR. We demonstrate the effectiveness of this concept and
show how two different approaches to the problem using somewhat different
assumptions produce equivalent results. We discuss lessons learned and the
resulting corrective actions applied to our program.

Solar and Stellar Astrophysics