Subpercent Photometry: Faint DA White Dwarf Spectrophotometric Standards for Astrophysical Observatories

Lasker Fellowship at the Space Telescope Science Institute; NSF [AST-1313006, AST-1815767]; NASA [NAS 5-26555]; National Aeronautics and Space Administration [NNX08AR22G]; National Science Foundation [AST-1238877]; Alfred P. Sloan Foundation; National Science Foundation; U.S. Department of Energy Office of Science; University of Arizona; Brazilian Participation Group; Brookhaven National Laboratory; Carnegie Mellon University; University of Florida; French Participation Group; German Participation Group; Harvard University; Johns Hopkins University; Lawrence Berkeley National Laboratory; Max Planck Institute for Astrophysics; Max Planck Institute for Extraterrestrial Physics; New Mexico State University; New York University; Ohio State University; Pennsylvania State University; University of Portsmouth; Princeton University; Spanish Participation Group; University of Tokyo; University of Utah; Vanderbilt University; University of Virginia; University of Washington; Yale University; FAS Division of Science, Research Computing Group at Harvard University; Instituto de Astrofisica de Canarias; Michigan State/Notre Dame/JINA Participation Group; [GO-12967]; [GO-13711]