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Proceedings Paper

Observing Strategies For Sihtf: Implications For Facility Chopping Requirements
Author(s): Allan J. Mord
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Paper Abstract

It has long been baselined that the SIRTF facility must provide spatial chopping at all observing wavelengths. Requiring tnat the image be stabilized to a small fraction of the Airy disk then implies that the spatial chopping must be combined with high-accuracy image motion compensation. An earlier system study found that this requirement is a major driver of the SIRTF design. We have reviewed the underlying requirements for modulating the infrared signal and examined the various kinds of modulation tnat could be used, and find that spatial chopping is not needed simultaneously with the highest-accuracy image stability. Decision trees and calculations are presented to assist in tne development of the final SIRTF facility chopping requirements.

Paper Details

Date Published: 1 February 1985
PDF: 11 pages
Proc. SPIE 0509, Cryogenic Optical Systems and Instruments I, (1 February 1985); doi: 10.1117/12.944978
Show Author Affiliations
Allan J. Mord, Ball Aerospace Systems Division (United States)

Published in SPIE Proceedings Vol. 0509:
Cryogenic Optical Systems and Instruments I
Ramsey K. Melugin, Editor(s)

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