Combined approach to the Hubble Space Telescope wave-front distortion analysis

Details Combined approach to the Hubble Space Telescope wave-front distortion analysis Combined approach to the Hubble Space Telescope wave-front distortion analysis

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apopt..32.2992r&link_type=abstract

Applied Optics (ISSN 0003-6935), vol. 32, no. 16, p. 2992-3008.

Physics

Optics

24

Astronomical Photography, Hubble Space Telescope, Image Reconstruction, Poisson Equation, Signal Distortion, Wave Fronts, Algorithms, Astronomical Observatories, Atmospheric Turbulence, Geometrical Optics

Scientific paper

Stellar images taken by the HST at various focus positions have been analyzed to estimate wave-front distortion. Rather than using a single algorithm, we 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-micron rms with a maximum deviation of 0.005 micron. 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.

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