Back-propagating the light of field stars to probe telescope mirrors aberrations

Ferréol Soulez (1, 2) , Frédéric Courbin (3) , Michael Unser (2)

1 CRAL - Centre de Recherche Astrophysique de Lyon
2 Biomedical Imaging Group [Lausanne]
3 EPFL Laboratoire d’astrophysique

We propose a wavefront-based method to estimate the PSF over the whole field of view. This method estimate the aberrations of all the mirrors of the telescope using only field stars. In this proof of concept paper, we described the method and present some qualitative results.

Domains: Signal and Image Processing

Ferréol Soulez, Frédéric Courbin, Michael Unser. Back-propagating the light of field stars to probe telescope mirrors aberrations. SPIE Astronomical Telescopes + Instrumentation Conference on Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II (SPIE-ATI'16), 2016, Edinburgh, United Kingdom. ⟨10.1117/12.2232702⟩. ⟨insu-01632844⟩