Media type: E-Article Title: Quantifying telescope phase discontinuities external to adaptive optics systems by use of phase diversity and focal plane sharpening Contributor: Lamb, Masen P.; Correia, Carlos; Sauvage, Jean-François; Véran, Jean-Pierre; Andersen, David R.; Vigan, Arthur; Wizinowich, Peter L.; van Dam, Marcos A.; Mugnier, Laurent; Bond, Charlotte Published: SPIE-Intl Soc Optical Eng, 2017 Published in: Journal of Astronomical Telescopes, Instruments, and Systems, 3 (2017) 3, Seite 039001 Language: English DOI: 10.1117/1.jatis.3.3.039001 ISSN: 2329-4124 Origination: Footnote: