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Author

S. Rinaldi

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Open access Aug 2026

Freezing the speckles: focal plane wavefront sensing with the spatially clipped self-coherent camera

The next generation of Extremely Large Telescopes (ELTs) and the Habitable Worlds Observatory (HWO) require active speckle suppression to directly image exo-Earths. Focal plane wavefront sensing and control allows us to detect and remove time-varying speckles through measurements of the electric field, ideally with a s...

J. Liberman, S. Haffert, J. Males et al. · 2 citations
Preprint Jul 2026

Testing of machine learning wavefront sensing algorithms on the Tiny Observatory for Telescope Optimization (TOTO) testbed

Phase retrieval techniques are utilized to correct low order wavefront aberrations originating from misalignments of the optical system in space based telescope concepts. Traditional phase retrieval involves observation of the Point Spread Function (PSF) and a diversity measurement, usually focus diversity although oth...

Sanchit Sabhlok, Solvay A. Blomquist, Y. Maggie et al. · 0 citations

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