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HST Image Restoration

Published online by Cambridge University Press:  30 March 2016

Michael R. Rosa
Michael R. Rosa*
Affiliation:
The Space Telescope-European Coordinating Facility European Southern Observatory, Karl-Schwarzschild-Str. 2 D-8046 Garching, Federal Republic of Germany

Extract

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Experience gained in a world wide effort to exploit restoration methods in order to improve the scientific return from the degraded HST optics calms down fears that HST might have lost all of its spatial resolving power. However, the problems posed by the characteristics of the point spread function (PSF) and of the detectors are such that “black-box” image restoration in an automatic procedure during pipe-line calibration is not applicable. Results from restoration experiments show the directions for future research: On the practical side ways are required to properly estimate the complicated PSF, to objectively describe errors, to treat undersampling and non-linear detectors, and to gain factors in throughput for large amounts of data; innovative example are methods to combine data obtained with differing PSFs (ground – space, space – space) and sampling.

Type
Joint Discussions
Information
Highlights of Astronomy , Volume 9: Highlights of Astronomy. As presented at the XXIst General Assembly of the IAU, 1991 , 1992 , pp. 493 - 495
Copyright
Copyright © Kluwer 1992

References

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