2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/15127We develop a physical model of the zodiacal cloud incorporating the real dust sources of asteroidal, cometary, and kuiperoidal origin. Using the inferred distribution of the zodiacal dust, we compute its thermal emission and scattering at several wavelengths (1.25, 5, and 20 $μ$m) as a function of NGST location assumed to be at 1 AU or 3 AU. Areas on the sky with a minimum of zodiacal light are determined.6 pages, incl. 2 colored figures, uses paspconf.sty. To be published in "The NGST Science and Technology Exposition" (eds. Eric P. Smith and Knox Long). Publications of the Astronomical Society of the Pacific, 2000Astrophysicstext