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Related Experiment Video

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Hubble Space Telescope Faint Object Camera calculated point-spread functions.

R G Lyon, J E Dorband, J M Hollis

|March 10, 1997

Summary

This summary is machine-generated.

Scientists recovered Hubble Space Telescope Faint Object Camera wave-front errors using noisy data. This enabled accurate point-spread function calculations for improved image restoration before and after COSTAR correction.

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Area of Science:

Astronomy
Optical Engineering

Background:

Hubble Space Telescope (HST) Faint Object Camera (FOC) data contains wave-front errors.
Accurate point-spread functions (PSFs) are crucial for astronomical image restoration.

Purpose of the Study:

To recover and parameterize the wave-front error of the HST FOC.
To generate accurate pre- and post-COSTAR PSFs for image restoration.

Main Methods:

Phase retrieval techniques were used to analyze noisy FOC PSFs.
Wave-front error was parameterized using annular Zernike and polar-Fourier polynomials.
Calculated PSFs were generated using the parameterized wave-front error.

Main Results:

The combined HST and FOC wave-front error was successfully recovered.
Accurate PSFs were generated for both pre- and post-COSTAR configurations.
Estimates of pre- and post-COSTAR spherical aberration were obtained.

Conclusions:

The developed method allows for accurate characterization of optical system wave-front errors.
Generated PSFs are suitable for image restoration across various wavelengths.
This work provides essential tools for analyzing and correcting HST optical aberrations.