Reconstruction of the Hubble Space Telescope mirror figure from out-of-focus stellar images

Claude A. Roddier; Francois J. Roddier

doi:10.1117/12.46715

1 September 1991 Reconstruction of the Hubble Space Telescope mirror figure from out-of-focus stellar images

Claude A. Roddier, Francois J. Roddier

Proceedings Volume 1494, Space Astronomical Telescopes and Instruments; (1991) https://doi.org/10.1117/12.46715
Event: Orlando '91, 1991, Orlando, FL, United States

Abstract

Both the amplitude and the phase of the incoming wave front viewed from the focal plane are reconstructed from the illumination recorded in defocused stellar images taken in flight by the HST. The reconstructed wavefront surface shows very little aberration. Compared to geometrical optics methods, the technique produces high spatial resolution wavefront maps with images taken closer to the telescope's focal plane. For the HST, the quality of the wavefront reconstruction is limited by the telescope jitter. The technique cannot be applied to ground-based telescopes at optical wavelength where the image is heavily blurred by the atmosphere. It is argued to be promising as a diagnostic tool for optical telescopes in space.

Citation Download Citation

Claude A. Roddier and Francois J. Roddier "Reconstruction of the Hubble Space Telescope mirror figure from out-of-focus stellar images", Proc. SPIE 1494, Space Astronomical Telescopes and Instruments, (1 September 1991); https://doi.org/10.1117/12.46715

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