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Proceedings Paper

Use Of The OTF In The Cost/Performance Evaluation Of Space Telescopes
Author(s): William S. Kovach
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Paper Abstract

The optical transfer function (OTF) can be used to give the first order performance characteristics of space telescope systems as a function of cost. Using the effective transfer functions of the optical system, instruments, sensors and communication system, a total system transfer function can be defined. Utilizing the properties of the transfer function, specific quality criteria are applied that are measures of certain astro-nomical objectives; such as imaging, photometry, spectroscopy, etc. The specific criteria are then related to a dominant independent variable which is a measure of the scientific objectives such as spatial resolution, at a given contrast level, for imaging and the amount of energy passing through a slit for spectroscopy. These measures can be related to a set of basic astronomical observations that are to be made by that particular telescope. Since nearly every sub-system has a cost-accuracy relationship, we can evaluate changes in subsystems to their corresponding impact on astronomical observations through changes in the transfer function of the system and the quality criteria.

Paper Details

Date Published: 1 June 1974
PDF: 14 pages
Proc. SPIE 0046, Image Assessment and Specification, (1 June 1974); doi: 10.1117/12.954007
Show Author Affiliations
William S. Kovach, General Dynamics Corporation (United States)

Published in SPIE Proceedings Vol. 0046:
Image Assessment and Specification
David T. Dutton, Editor(s)

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