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Proceedings Paper

Restoration of FOC imaging data: considerations when choosing FOC PSFs
Author(s): David A. Baxter; Perry E. Greenfield; Warren Hack; Anatonella Nota; Robert Ian Jedrzejewski; Francesco Paresce
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Paper Abstract

We present a discussion of the various sources of FOC Point Spread Functions (PSFs), and the problems associated with their use. In particular, we highlight the time variability of the PSF halo structure and indicate some of the causes. We examine the usefulness of the PSF modelling software, TinyTim, and show that although this software creates visually similar images, these similarities are to a large extent superficial. We conclude by showing that the theoretical PSFs produced by TinyTim are inadequate for the restoration of high S/N FOC point source images. We also conclude that, because of 'breathing', there is a strong likelihood that empirical PSFs, whether pre-existing or specifically obtained, may not be sufficient either.

Paper Details

Date Published: 1 November 1993
PDF: 11 pages
Proc. SPIE 1945, Space Astronomical Telescopes and Instruments II, (1 November 1993); doi: 10.1117/12.158776
Show Author Affiliations
David A. Baxter, Space Telescope Science Institute (United States)
Perry E. Greenfield, Space Telescope Science Institute (United States)
Warren Hack, Space Telescope Science Institute (United States)
Anatonella Nota, Space Telescope Science Institute (United States)
European Space Agency (France)
Robert Ian Jedrzejewski, Space Telescope Science Institute (United States)
Francesco Paresce, Space Telescope Science Institute, (United States)
European Space Agency (France)
Osservatorio Astronomico di Torino (Italy)


Published in SPIE Proceedings Vol. 1945:
Space Astronomical Telescopes and Instruments II
Pierre Y. Bely; James B. Breckinridge, Editor(s)

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