Laboratory demonstration of focal plane wavefront sensing using phase diversity: a way to tackle the problem of NCPA in SHARK-NIR

Laboratory demonstration of focal plane wavefront sensing using phase diversity: a way to tackle the problem of NCPA in SHARK-NIR. Part II: new characterization tests and alternative wavefront sensing strategies

“…6 The first part of characterization tests performed at INAF-Padua laboratories has been presented in a previous publication. 7 For the second part, presented in this work, we set up a new bench with the specific aim of addressing the issues of optimal defocus and optimal number of intra/extra focal images to be used for the reconstruction. In Section 2 we present the optical test bench.…”