Restoration of FOC imaging data: considerations when choosing FOC PSFs

David A. Baxter; Perry E. Greenfield; Warren Hack; Anatonella Nota; Robert Ian Jedrzejewski; Francesco Paresce

doi:10.1117/12.158776

1 November 1993 Restoration of Faint Object Camera (FOC) imaging data: considerations when choosing FOC point spread functions (PSFs)

David A. Baxter, Perry E. Greenfield, Warren Hack, Anatonella Nota, Robert Ian Jedrzejewski, Francesco Paresce

Author Affiliations +

Proceedings Volume 1945, Space Astronomical Telescopes and Instruments II; (1993) https://doi.org/10.1117/12.158776
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

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.

Citation Download Citation

David A. Baxter, Perry E. Greenfield, Warren Hack, Anatonella Nota, Robert Ian Jedrzejewski, and Francesco Paresce "Restoration of Faint Object Camera (FOC) imaging data: considerations when choosing FOC point spread functions (PSFs)", Proc. SPIE 1945, Space Astronomical Telescopes and Instruments II, (1 November 1993); https://doi.org/10.1117/12.158776

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