Aims. FIRST is a spectro-interferometer combining, in the visible, the techniques of aperture
masking and spatial filtering thanks to single-mode fibers. By turning a monolithic telescope …

To directly detect exoplanets and protoplanetary disks, the development of high accuracy
wavefront sensing and control (WFS&C) technologies is essential, especially for ground …

A key challenge of high contrast imaging (HCI) is to differentiate a speckle from an exoplanet
signal. The sources of speckles are a combination of atmospheric residuals and aberrations …

Recent evolutions in high contrast imaging have shed light on intrinsic limitations of general
purpose adaptive optics (AO) systems. In particular, the low wind and petaling effects (LWE …

Integrated optics are used to achieve astronomical interferometry inside robust and compact
materials, improving the instrument's stability and sensitivity. To perform differential phase …

Integrated optics are used to achieve astronomical interferometry inside robust and compact
materials, improving the instruments stability and sensitivity. In order to perform differential …

Integrated optics are used to achieve astronomical interferometry inside robust and compact
materials, improving the instrument's stability and sensitivity. In order to perform differential …

Adaptive Optics projects at Subaru Telescope span a wide field of capabilities ranging from
ground-layer adaptive optics (GLAO) providing partial correction over a 20 arcmin FOV to …

Protoplanets accreting matter seem to feature a strong emission at $\text {H}\alpha $
wavelength and the contrast of the system is then weaker at these wavelengths and thus …

A key challenge of high contrast imaging (HCI) is to differentiate a speckle from an exoplanet
signal. The sources of speckles are a combination of atmospheric residuals and aberrations …