Combined approach to the Hubble Space Telescope wave-front distortion analysis.
Abstract
Stellar images taken by the Hubble Space Telescope at various focus positions have been analyzed to estimate wave-front distortion. Rather than using a single algorithm, the authors found that better results were obtained by combining the advantages of various algorithms. For the planetary camera, the most accurate algorithms consistently gave a spherical aberration of -0.290-μm rms with a maximum deviation of 0.005 μm. Evidence was found that the spherical aberration is essentially produced by the primary mirror. The illumination in the telescope pupil plane was reconstructed and evidence was found for a slight camera misalignment.
- Publication:
-
Applied Optics
- Pub Date:
- June 1993
- DOI:
- 10.1364/AO.32.002992
- Bibcode:
- 1993ApOpt..32.2992R
- Keywords:
-
- Astronomical Photography;
- Hubble Space Telescope;
- Image Reconstruction;
- Poisson Equation;
- Signal Distortion;
- Wave Fronts;
- Algorithms;
- Astronomical Observatories;
- Atmospheric Turbulence;
- Geometrical Optics;
- Astronomy