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Author

R. Landman

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Aug 2026

What the speck is that? Improving exoplanet imaging sensitivity by combining machine learning and physical models

Extreme adaptive optics observations of exoplanetary systems are limited at the smallest separations by speckle noise introduced by diffractive effects in the telescope and instrument system. To probe for lower-mass planets on close orbits, we need to improve starlight suppression with both optics and post-processing t...

J. Long, S. Haffert, J. Males et al. · 1 citation
Open access Aug 2026

No need to modulate: on-sky results of a neural network enhanced pyramid wavefront sensor and prospects for the ELTs

One of the main limitations of ground-based extreme adaptive optics systems (XAO) is the balance between the temporal and photon noise error. The unmodulated Pyramid Wavefront Sensor (uPWFS) promises significant gains in sensitivity over its modulated counterpart, but its practical use is limited by its linearity range...

R. Landman, Liam Koning, S. Haffert et al. · 1 citation

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