Focal-plane wavefront sensing with high-order adaptive optics systems

We investigate methods to calibrate the non-common path aberrations at an adaptive optics system having a wavefront-correcting device working with an extremely high resolution (larger than 150x150 correcting elements). We use focal-plane images collected successively, the corresponding phase-diversity information and numerically efficient...

Calibrating a high-Esolution wavefront corrector with a static focal-Plane camera

We present a method to calibrate a high-resolution wavefront (WF)-correcting device with a single, static camera, located in the focal-plane; no moving of any component is needed. The method is based on a localized diversity and differential optical transfer functions to compute both the phase and amplitude in the pupil plane located upstream of...

Oil reporting for the FQD An assessment of effort needed

This study addresses part of the issues that are debated: it assesses the administrative burden and practical feasibility, and broadly explores the potential effects of the proposal on the EU refining sector. This study is based on literature research, combined with interviews with stakeholders and experts, and was commissioned by Transport &amp...