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Proceedings Paper

Prediction Of Infrared (IR) Celestial Source Counts
Author(s): Jerry Krassner
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Paper Abstract

One of the questions that must be investigated in the design of spaceborne IR telescope systems is that of the level of the background flux due to discrete celestial IR sources (stars, galaxies, etc.). This flux is a potential source of false targets and could decrease the efficiency of a system's data handling capability. This paper describes a technique for predicting 2.2 μm source counts based on an extrapolation of the Cal Tech Two Micron Sky Survey (IRC) using a model of galactic structure. These source counts can be used to estimate the celestial IR flux incident on a space-viewing sensor. For improved accuracy source count predictions should be based on a galactic model which includes, e.g., local spiral arm structure. The IRC is not complete to distances at which spiral arm structure becomes obvious. However, for some space systems now under consideration such galactic features should be considered. For this task as well as for an improved knowledge of stellar distributions in the galaxy deeper IR surveys would be very desirable. Appropriate surveys are possible using existing technology.

Paper Details

Date Published: 27 July 1981
PDF: 8 pages
Proc. SPIE 0280, Infrared Astronomy: Scientific/Military Thrusts and Instrumentation, (27 July 1981); doi: 10.1117/12.931965
Show Author Affiliations
Jerry Krassner, Grumman Aerospace Corporation (United States)


Published in SPIE Proceedings Vol. 0280:
Infrared Astronomy: Scientific/Military Thrusts and Instrumentation
Nancy W. Boggess; Howard J. Stears, Editor(s)

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