At present, the principal limitation on the resolution and contrast of astronomical imaging
instruments comes from aberrations in the optical path, which may be imposed by the Earth's …

Kernel phase interferometry (KPI) is a data processing technique that allows for the
detection of asymmetries (such as companions or disks) in high-Strehl images, close to and …

Context. Kernel phase is a data analysis method based on a generalization of the notion of
closure phase, which was invented in the context of interferometry, but it applies to well …

The detection of high contrast companions at small angular separation appears feasible in
conventional direct images using the self-calibration properties of interferometric observable …

Context. To reach its optimal performance, Fizeau interferometry requires that we work to
resolve instrumental biases through calibration. One common technique used in high …

Kernel phase interferometry is an approach to high angular resolution imaging which
enhances the performance of speckle imaging with adaptive optics. Kernel phases are self …

Context. The James Webb Space Telescope (JWST) will offer high angular resolution
observing capability in the near-infrared with masking interferometry on the Near-Infrared …

Directly imaging exoplanets is challenging because quasi-static phase aberrations in the
pupil plane (speckles) can mimic the signal of a companion at small angular separations …

With the imaging and astrometric facilities coming up as the next major leaps forward in
interferometry at the VLT we examine options for beam combination of multiple beams, both …

Closure phase is the phase of a closed-loop product of spatial coherences formed by a-
element interferometer array. Its invariance to phase corruption attributable to individual …