CBSD: The celestial background scene descriptor

Details CBSD: The celestial background scene descriptor CBSD: The celestial background scene descriptor

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mrc..rept.....k&link_type=abstract

Final Report, Apr. 1988 - Jan. 1993 Mission Research Corp., Nashua, NH.

Astronomy and Astrophysics

Astronomy

Astronomy, Atmospheric Models, Background Radiation, Extraterrestrial Radiation, Light Scattering, Radiance, Simulation, Stellar Models, Zodiacal Light, Celestial Bodies, Computer Programs, Computerized Simulation, Density Distribution, H Ii Regions, Infrared Radiation, Point Sources, Thermal Radiation

Scientific paper

This report documents the Celestial Background Scene Descriptor (CBSD) program which is a suite of models to simulate the radiance of astronomical sources. The model simulate the contribution of the celestial background in the wavelength regime 2 to 30 micrometers with a positional accuracy of 2 arcseconds. The output of the models are tables and images suitable for use in sensor simulation. The CBAMP model calculates the thermal radiance and scattered light for the solar system objects including the Sun, Moon, the planets, the Galilean Satellites, 4559 numbered asteroids, and 9643 unnumbered asteroids. The solar system dust cloud (Zodiacal light model CBZODY) uses a Lorentzian out of the plane dust density distribution to derive a number density from which the emitted and scattered radiances are computed. The stellar point sources model, CBPNTS, is a 'fast' running scene generator version of the Air Force/NASA/Ames statistical point source model, SKY. The sky is divided into 899 regions with size inversely proportional to stellar density. In addition, there are 87 different spectral classes, including 82 classes of stars, two classes each of planetary and reflection nebulae, and one of compact H2 regions. The nature of the galactic infrared cirrus is discussed.

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